For the duration, you sense the presence of portals, even inactive ones, within 30 feet of yourself.
If you detect a portal in this way, you can use your action to study it. Make a DC 15 ability check using your spellcasting ability. On a successful check, you learn the destination plane of the portal and what portal key it requires, then the spell ends. On a failed check, you learn nothing and can't study that portal again using this spell until you cast it again.
The spell can penetrate most barriers but is blocked by 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt.
You suggest a course of activity—described in no more than 25 words—to one creature you can see within range that can hear and understand you. The suggestion must sound achievable and not involve anything that would obviously deal damage to the target or it allies. For example, you could say, Fetch the key to the cult's treasure vault, and give the key to me. Or you could say, Stop fighting, leave this library peacefully, and don't return.
The target must succeed on a Wisdom saving throw or have the Charmed condition for the duration or until you or your allies deal damage to the target. The Charmed target pursues the suggestion to the best of its ability. The suggested activity can continue for the entire duration, but if the suggested activity can be completed in a shorter time, the spell ends for the target upon completing it.
You spray a 15-foot cone of spectral cards. Each creature in that area must make a Dexterity saving throw. On a failed save, a creature takes 2d10 force damage and has the blinded condition until the end of its next turn. On a successful save, a creature takes half as much damage only.
At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d10 for each slot level above 2nd.
Until the spell ends, one willing creature you touch gains the ability to move up, down, and across vertical surfaces and along ceilings, while leaving its hands free. The target also gains a Climb Speed equal to its Speed.
Using a Higher-Level Spell Slot. You can target one additional creature for each spell slot level about 2.
You weave together threads of shadow to create a sword of solidified gloom in your hand. This magic sword lasts until the spell ends. It counts as a simple melee weapon with which you are proficient. It deals 2d8 psychic damage on a hit and has the finesse, light, and thrown properties (range 20/60). In addition, when you use the sword to attack a target that is in dim light or darkness, you make the attack roll with advantage.
If you drop the weapon or throw it, it dissipates at the end of the turn. Thereafter, while the spell persists, you can use a bonus action to cause the sword to reappear in your hand.
At Higher Levels: When you cast this spell using a 3rd- or 4th-level spell slot, the damage increases to 3d8. When you cast it using a 5th- or 6th-level spell slot, the damage increases to 4d8. When you cast it using a spell slot of 7th level or higher, the damage increases to 5d8.
You hurl three fiery rays. You can hurl them at one target within range or at several. Make a ranged spell attack for each ray. On a hit, the target takes 2d6 Fire damage.
Using a Higher-Level Spell Slot. You create one additional ray for each spell slot level above 2.
A beam of enervating energy shoots from you toward a creature within range. The target must make a Constitution saving throw. On a successful save, the target has Disadvantage on the next attack roll it makes until the start of your next turn.
On a failed save, the target has Disadvantage on Strength-based D20 Tests for the duration. During that time, it also subtracts 1d8 from all its damage rolls. The target repeats the save at the end of each of its turns, ending the spell on a success.
You attempt to craft an illusion in the mind of a creature you can see within range. The target makes an Intelligence saving throw. On a failed save, you create a phantasmal object, creature, or other phenomenon that is no larger than a 10-foot Cube and that is perceivable only to the target for the duration. The phantasm includes sound, temperature, and other stimuli.
The target can take a Study action to examine the phantasm with an Intelligence (Investigation) check against your spell save DC. If the check succeeds, the target realizes that the phantasm is an illusion, and the spell ends.
While affected by the spell, the target treats the phantasm as if it were real and rationalizes any illogical outcomes from interacting with it. For example, if the target steps through a phantasmal bridge and survives the fall, it believes the bridge exists and something else caused it to fall.
An affected target can even take damage from the illusion if the phantasm represents a dangerous creature or hazard. On each of
your turns, such a phantasm can deal 2d8 Psychic damage to the target if it is in the phantasm's area or within 5 feet of the phantasm. The target perceives the damage as a type appropriate to the illusion.
Briefly surrounded by silvery mist, you teleport up to 30 feet to an unoccupied space you can see.
Three illusory duplicates of yourself appear in your space. Until the spell ends, the duplicates move with you and mimic your actions, shifting position so it's impossible to track which image is real.
Each time a creature hits you with an attack roll during the spell's duration, roll a d6 for each of your remaining duplicates. If any of the d6s rolls a 3 or higher, one of the duplicates is hit instead of you, and the duplicate is destroyed. The duplicates otherwise ignore all other damage and effects. The spell ends when all three duplicates are destroyed.
A creature is unaffected by this spell if it has the Blinded condition, Blindsight, or Truesight.
You drive a spike of psionic energy into the mind of one creature you can see within range. The target makes a Wisdom saving throw, taking 3d8 Psychic damage on a failed save or half as much damage on a successful one. On a failed save, you also always know the target's location until the spell ends, but only while the two of you are on the same plane of existence. While you have this knowledge, the target can't become hidden from you, and if it has the Invisible condition, it gains no benefit from that condition against you.
A creature you touch has the Invisible condition until the spell ends. The spell ends early immediately after the target makes an attack roll, deals damage, or casts a spell.
Using a Higher-Level Spell Slot. You can target one additional creature for each spell slot level above 2.
Choose a Humanoid that you can see within range. The target must succeed on a Wisdom saving throw or have the Paralyzed condition for the duration. At the end of each of its turns, the target repeats the save, ending the spell on itself on a success.
Using a Higher-Level Spell Slot. You can target one additional Humanoid for each spell slot level above 2.
You weave a distracting string of words, causing creatures of your choice that you can see within range to make a Wisdom saving throw. Any creature you or your companions are fighting automatically succeeds on this save. On a failed save, a target has a -10 penalty to Wisdom (Perception) checks and Passive Perception until the spell ends.
Choose one creature you can see within range. Yellow strips of magical energy loop around the creature. The target must succeed on a Strength saving throw, or its flying speed (if any) is reduced to 0 feet for the spell's duration. An airborne creature affected by this spell safely descends at 60 feet per round until it reaches the ground or the spell ends.
You activate one of the effects below. Until the spell ends, you can activate either effect as a Magic action on your later turns.
Sense Thoughts. You sense the presence of thoughts within 30 feet of yourself that belong to creatures that know languages or are telepathic. You don't read the thoughts, but you know that a thinking creature is present.
The spell is blocked by 1 foot of stone, dirt, or wood, 1 inch of metal, or a thin sheet of lead.
Read Thoughts. Target one creature you can see within 30 feet of yourself or one creature within 30 feet of yourself that you detected with the Sense Thoughts option. You learn what is most on the target's mind right now. If the target doesn't know any languages and isn't telepathic, you learn nothing.
As a Magic action on your next turn, you can try to probe deeper into the target's mind. If you probe deeper, the target makes a Wisdom saving throw. On a failed save, you discern the target's reasoning, emotions, and something that looms large in its mind (such as a
worry, love, or hate). On a successful save, the spell ends. Either way, the target knows that you are probing into its mind, and until you shift your attention away from the target's mind, the target can take an action on its turn to make an Intelligence (Arcana) check against your spell save DC, ending the spell on a success.
For the duration, magical Darkness spreads from a point within range and fills a 15-foot-radius Sphere. Darkvision can't see through it, and nonmagical light can't illuminate it.
Alternatively, you cast the spell on an object that isn't being worn or carried, causing the Darkness to fill a 15-foot Emanation originating from that object. Covering that object with something opaque, such as a bowl or helm, blocks the Darkness.
If any of this spell's area overlaps with an area of Bright Light or Dim Light created by a spell of level 2 or lower, that other spell is dispelled.
One creature that you can see within range must succeed on a Wisdom saving throw or have the Charmed condition for the duration. The creature succeeds automatically if it isn't Humanoid.
A spectral crown appears on the Charmed target's head, and it must use its action before moving on each of its turns to make a melee attack against a creature other than itself that you mentally choose. The target can act normally on its turn if you choose no creature or if no creature is within its reach. The target repeats the save at the end of each of its turns, ending the spell on itself on a success.
On your later turns, you must take the Magic action to maintain control of the target, or the spell ends.
You conjure spinning daggers in a 5-foot Cube centered on a point within range. Each creature in that area takes 4d4 Slashing damage. A creature also takes this damage if it enters the Cube or ends its turn there or if the Cube moves into its space. A creature takes this damage only once per turn.
On your later turns, you can take a Magic action to teleport the Cube up to 30 feet.
Using a Higher-Level Spell Slot. The damage increases by 2d4 for each spell slot level above 2.
You draw on knowledge from spirits of the past. Choose one skill in which you lack proficiency. For the spell's duration, you have proficiency in the chosen skill. The spell ends early if you cast it again.
A beam of crackling energy lances toward a creature within range, forming a sustained arc of lightning between you and the target. Make a ranged spell attack against it. On a hit, the target takes 2d12 Lightning damage.
On each of your subsequent turns, you can take a Bonus Action to deal 1d12 Lightning damage to the target automatically, even if the first attack missed.
The spell ends if the target is ever outside the spell's range or if it has Total Cover from you.
Using a Higher-Level Spell Slot. The initial damage increases by 1d12 for each spell slot level above 1.
This spell creates an Invisible, mindless, shapeless, Medium force that performs simple tasks at your command until the spell ends. The servant springs into existence in an unoccupied space on the ground within range. It has AC 10, 1 Hit Point, and a Strength of 2, and it can't attack. If it drops to 0 Hit Points, the spell ends.
Once on each of your turns as a Bonus Action, you can mentally command the servant to move up to 15 feet and interact with an object. The servant can perform simple tasks that a human could do, such as fetching things, cleaning, mending, folding clothes, lighting fires, serving food, and pouring drinks. Once you give the command, the servant performs the task to the best of its ability until it completes the task, then waits for your next command.
If you command the servant to perform a task that would move it more than 60 feet away from you, the spell ends.
For the duration, you can comprehend and verbally communicate with Beasts, and you can use any of the Influence action's skill options with them.
Most Beasts have little to say about topics that don't pertain to survival or companionship, but at minimum, a Beast can give you information about nearby locations and monsters, including whatever it has perceived within the past day.
One creature of your choice that you can see within range makes a Wisdom saving throw. On a failed save, it has the Prone and Incapacitated conditions for the duration. During that time, it laughs uncontrollably if it's capable of laughter, and it can't end the Prone condition on itself.
At the end of each of its turns and each time it takes damage, it makes another Wisdom saving throw. The target has Advantage on the save if the save is triggered by damage. On a successful save, the spell ends.
Using a Higher-Level Spell Slot. You can target one additional creature for each spell slot level about 1.
Until the spell ends, one willing creature you touch is protected against creatures that are Aberrations, Celestials, Elementals, Fey, Fiends, or Undead. The protection grants several benefits. Creatures of those types have Disadvantage on attack rolls against the target. The target also can't be possessed by or gain the Charmed or Frightened conditions from them. If the target is already possessed, Charmed, or Frightened by such a creature, the target has Advantage on any new saving throw against the relevant effect.
You write on parchment, paper, or another suitable material and imbue it with an illusion that lasts for the duration. To you and any creatures you designate when you cast the spell, the writing appears normal, seems to be written in your hand, and conveys whatever meaning you intended when you wrote the text. To all others, the writing appears as if it were written in an unknown or magical script that is unintelligible. Alternatively, the illusion can alter the meaning, handwriting, and language of the text, though the language must be one you know.
If the spell is dispelled, the original script and the illusion both disappear.
A creature that has Truesight can read the hidden message.
You place a curse on a creature that you can see within range. Until the spell ends, you deal an extra 1d6 Necrotic damage to the target whenever you hit it with an attack roll. Also, choose one ability when you cast the spell. The target has Disadvantage on ability checks made with the chosen ability.
If the target drops to 0 Hit Points before this spell ends, you can take a Bonus Action on a later turn to curse a new creature.
Using a Higher-Level Spell Slot. Your Concentration can last longer with a spell slot of level 2 (up to 4 hours), 3-4 (up to 8 hours), or 5+ (24 hours).
The creature that damaged you is momentarily surrounded by green flames. It makes a Dexterity saving throw, taking 2d10 Fire damage on a failed save or half as much damage on a successful one.
Using a Higher-Level Spell Slot. The damage increases by 1d10 for each spell slot level above 1.
Do you need to squeeze a few more gold pieces out of a merchant as you try to sell that weird octopus statue you liberated from the chaos temple? Do you need to downplay the worth of some magical assets when the tax collector stops by? Distort value has you covered.
You cast this spell on an object no more than 1 foot on a side, doubling the object's perceived value by adding illusory flourishes or polish to it, or reducing its perceived value by half with the help of illusory scratches, dents, and other unsightly features. Anyone examining the object can ascertain its true value with a successful Intelligence (Investigation) check against your spell save DC.
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the maximum size of the object increases by 1 foot for each slot level above 1st.
For the duration, you sense the presence of magical effects within 30 feet of yourself. If you sense such effects, you can take the Magic action to see a faint aura around any visible creature or object in the area that bears the magic, and if an effect was created by a spell, you learn the spell's school of magic.
The spell is blocked by 1 foot of stone, dirt, or wood, 1 inch of metal, or a thin sheet of lead.
You take the Dash action, and until the spell ends, you can take that action again as a Bonus Action.
One creature of your choice that you can see within range hears a discordant melody in its mind. The target makes a Wisdom saving throw. On a failed save, it takes 3d6 Psychic damage and must immediately use its Reaction, if available, to move as far away from you as it can, using the safest route. On a successful save, the target takes half as much damage only.
Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 1.
For the duration, you understand the literal meaning of any language that you hear or see signed. You also understand any written language that you see, but you must be touching the surface on which the words are written. It takes about 1 minute to read one page of text. This spell doesn't decode symbols or secret messages.
You speak a one-word command to a creature you can see within range. The target must succeed on a Wisdom saving throw or follow the command on its next turn. Choose the command from these options:
Approach. The target moves toward you by the shortest and most direct route, ending its turn if it moves within 5 feet of you.
Drop. The target drops whatever it is holding and then ends its turn.
Flee. The target spends its turn moving away from you by the fastest available means.
Grovel. The target has the Prone condition and then ends its turn.
Halt. On its turn, the target doesn't move and takes no action or Bonus Action.
Using a Higher-Level Spell Slot. You can affect one additional creature for each spell slot level above 1.
One Humanoid you can see within range makes a Wisdom saving throw. It does so with Advantage if you or your allies are fighting it. On a failed save, the target has the Charmed condition until the spell ends or until you or your allies damage it. The Charmed creature is Friendly to you. When the spell ends, the target knows it was Charmed by you.
Using a Higher-Level Spell Slot. You can target one additional creature for each spell slot level above 1.
You awaken the sense of mortality in one creature you can see within range. A construct or an undead is immune to this effect. The target must succeed on a Wisdom saving throw or become frightened of you until the spell ends. The frightened target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can target one additional creature for each slot level above 1st. The creatures must be within 30 feet of each other when you target them.
Up to three creatures of your choice that you can see within range must each make a Charisma saving throw. Whenever a target that fails this save makes an attack roll or a saving throw before the spell ends, the target must subtract 1d4 from the attack roll or save.
Using a Higher-Level Spell Slot. You can target one additional creature for each spell slot level above 1.
A thin sheet of flames shoots forth from you. Each creature in a 15-foot Cone makes a Dexterity saving throw, taking 3d6 Fire damage on a failed save or half as much damage on a successful one.
Flammable objects in the Cone that aren't being worn or carried start burning.
Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 1.
Invoking Hadar, you cause tendrils to erupt from yourself. Each creature in a 10-foot Emanation originating from you makes a Strength saving throw. On a failed save, a target takes 2d6 Necrotic damage and can't take Reactions until the start of its next turn. On a successful save, a target takes half as much damage only.
Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 1.
Protective magical frost surrounds you. You gain 5 Temporary Hit Points. If a creature hits you with a melee attack roll before the spell ends, the creature takes 5 Cold damage. The spell ends early if you have no Temporary Hit Points.
Guided by a flash of magical insight, you make one attack with the weapon used in the spell's casting. The attack uses your spellcasting ability for the attack and damage rolls instead of using Strength or Dexterity. If the attack deals damage, it can be Radiant damage or the weapon's normal damage type (your choice).
Cantrip Upgrade. Whether you deal Radiant damage or the weapon's normal damage type, the attack deals extra Radiant damage when you reach levels 5 (1d6), 11 (2d6), and 17 (3d6).
You point at one creature you can see within range, and the single chime of a dolorous bell is audible within 10 feet of the target. The target must succeed on a Wisdom saving throw or take 1d8 Necrotic damage. If the target is missing any of its Hit Points, it instead takes 1d12 Necrotic damage.
Cantrip Upgrade. The damage increases by one die when you reach levels 5 (2d8 or 2d12), 11 (3d8 or 3d12), and 17 (4d8 or 4d12).
Each creature in a 5-foot Emanation originating from you must succeed on a Constitution saving throw or take 1d6 Thunder damage. The spell's thunderous sound can be heard up to 100 feet away.
Cantrip Upgrade. The damage increases by 1d6 when you reach levels 5 (2d6), 11 (3d6), and 17 (4d6).
You create a burst of thunderous sound that can be heard up to 100 feet away. Each creature within range, other than you, must make a Constitution saving throw or take 1d6 thunder damage.
The spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).
You create a momentary circle of spectral blades that sweep around you. All other creatures within 5 feet of you must succeed on a Dexterity saving throw or take 1d6 force damage.
At Higher Levels: This spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).
You create a magical effect within range. Choose the effect from the options below. If you cast this spell multiple times, you can have up to three of its non-instantaneous effects active at a time.
Sensory Effect. You create an instantaneous, harmless sensory effect, such as a shower of sparks, a puff of wind, faint musical notes, or an odd odor.
Fire Play. You instantaneously light or snuff out a candle, a torch, or a small campfire.
Clean or Soil. You instantaneously clean or soil an object no larger than 1 cubic foot.
Minor Sensation. You chill, warm, or flavor up to 1 cubic foot of nonliving material for 1 hour.
Magic Mark. You make a color, a small mark, or a symbol appear on an object or a surface for 1 hour.
Minor Creation. You create a nonmagical trinket or an illusory image that can fit in your hand. It lasts until the end of your next turn. A trinket can deal no damage and has no monetary worth.
You spray toxic mist at a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 1d12 Poison damage.
Cantrip Upgrade. The damage increases by 1d12 when you reach levels 5 (2d12), 11 (3d12), and 17 (4d12).
You try to temporarily sliver the mind of one creature you can see within range. The target must succeed on an Intelligence saving throw or take 1d6 Psychic damage and subtract 1d4 from the next saving throw it makes before the end of your next turn.
Cantrip Upgrade. The damage increases by 1d6 when you reach levels 5 (2d6), 11 (3d6), and 17 (4d6).
You create a sound or an image of an object within range that lasts for the duration. See the descriptions below for the effects of each. The illusion ends if you cast this spell again.
If a creature takes a Study action to examine the sound or image, the creature can determine that it is an illusion with a successful Intelligence (Investigation) check against your spell save DC. If a creature discerns the illusion for what it is, the illusion becomes faint to the creature.
Sound. If you create a sound, its volume can range from a whisper to a scream. It can be your voice, someone else's voice, a lion's roar, a beating of drums, or any other sound you choose. The sound continues unabated throughout the duration, or you can make discrete sounds at different times before the spell ends.
Image. If you create an image of an object—such as a chair, muddy footprints, or a small chest—it must be no larger than a 5-foot Cube. The image can't create sound, light, smell, or any other sensory effect. Physical interaction with the image reveals it to be an illusion, since things can pass through it.
You drive a disorienting spike of psychic energy into the mind of one creature you can see within range. The target must succeed on an Intelligence saving throw or take 1d6 psychic damage and subtract 1d4 from the next saving throw it makes before the end of your next turn.
At Higher Levels: This spell's damage increases by 1d6 when you reach certain levels: 5th level (2d6), 11th level (3d6), and 17th level (4d6).
You touch one to three pebbles and imbue them with magic. You or someone else can make a ranged spell attack with one of the pebbles by throwing it or hurling it with a sling. lf thrown, a pebble has a range of 60 feet. If someone else attacks with a pebble, that attacker adds your spellcasting ability modifier, not the attacker's, to the attack roll. On a hit, the target takes bludgeoning damage equal to 1d6 +your spellcasting ability modifier. Whether the attack hits or misses, the spell then ends on the stone.
If you cast this spell again, the spell ends on any pebbles still affected by your previous casting.
A spectral, floating hand appears at a point you choose within range. The hand lasts for the duration. The hand vanishes if it is ever more than 30 feet away from you or if you cast this spell again.
When you cast the spell, you can use the hand to manipulate an object, open an unlocked door or container, stow or retrieve an item from an open container, or pour the contents out of a vial.
As a Magic action on your later turns, you can control the hand thus again. As part of that action, you can move the hand up to 30 feet.
The hand can't attack, activate magic items, or carry more than 10 pounds
You create a lash of lightning energy that strikes at one creature of your choice that you can see within 15 feet of you. The target must succeed on a Strength saving throw or be pulled up to 10 feet in a straight line toward you and then take 1d8 lightning damage if it is within 5 feet of you.
At Higher Levels: This spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).
You cause a cloud of mites, fleas, and other parasites to appear momentarily on one creature you can see within range. The target must succeed on a Constitution saving throw, or it takes 1d6 poison damage and moves 5 feet in a random direction if it can move and its speed is at least 5 feet. Roll a d4 for the direction: 1, north: 2, south: 3, east: or 4, west. This movement doesn't provoke opportunity attacks, and if the direction rolled is blocked, the target doesn't move.
The spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).
You brandish the weapon used in the spell's casting and make a melee attack with it against one creature within 5 feet of you. On a hit, the target suffers the weapon attack's normal effects, and you can cause green fire to leap from the target to a different creature of your choice that you can see within 5 feet of it. The second creature takes fire damage equal to your spellcasting ability modifier.
At Higher Levels. At 5th level, the melee attack deals an extra 1d8 fire damage to the target on a hit, and the fire damage to the second creature increases to 1d8 + your spellcasting ability modifier. Both damage rolls increase by 1d8 at 11th level (2d8 and 2d8) and 17th level (3d8 and 3d8).
You cause numbing frost to form on one creature that you can see within range. The target must make a Constitution saving throw. On a failed save, the target takes 1d6 cold damage, and it has disadvantage on the next weapon attack roll it makes before the end of its next turn.
The spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).
You magically emanate a sense of friendship toward one creature you can see within range. The target must succeed on a Wisdom saving throw or have the Charmed condition for the duration. The target succeeds automatically if it isn't a Humanoid, if you're fighting it, or if you have cast this spell on it within the past 24 hours.
The spell ends early if the target takes damage or if you make an attack roll, deal damage, or force anyone to make a saving throw. When the spell ends, the target knows it was Charmed by you.
You hurl a beam of crackling energy. Make a ranged spell attack against one creature or object in range. On a hit, the target takes 1d10 Force damage.
Cantrip Upgrade. The spell creates two beams at level 5, three beams at level 11, and four beams at level 17. You can direct the beams at the same target or at different ones. Make a separate attack roll for each beam.
You create a bonfire on ground that you can see within range. Until the spells ends, the magic bonfire fills a 5-foot cube. Any creature in the bonfire's space when you cast the spell must succeed on a Dexterity saving throw or take 1d8 fire damage. A creature must also make the saving throw when it enters the bonfire's space for the first time on a turn or ends its turn there.
The bonfire ignites flammable objects in its area that aren't being worn or carried.
The spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).
Channeling the chill of the grave, make a melee spell attack against a target within reach. On a hit, the target takes 1d10 Necrotic damage, and it can't regain Hit Points until the end of your next turn.
Cantrip Upgrade. The damage increases by 1d10 when you reach levels 5 (2d10), 11 (3d10), and 17 (4d10).
You brandish the weapon used in the spell's casting and make a melee attack with it against one creature within 5 feet of you. On a hit, the target suffers the weapon attack's normal effects and then becomes sheathed in booming energy until the start of your next turn. If the target willingly moves 5 feet or more before then, the target takes 1d8 thunder damage, and the spell ends.
At Higher Levels. At 5th level, the melee attack deals an extra 1d8 thunder damage to the target on a hit, and the damage the target takes for moving increases to 2d8. Both damage rolls increase by 1d8 at 11th level (2d8 and 3d8) and again at 17th level (3d8 and 4d8).
Whenever a creature makes an attack roll against you before the spell ends, the attacker subtracts 1d4 from the attack roll.