Giant Rat Small beast, unaligned 1/8 25 xp

Armor class 12 (natural armour)
Hit points 7 (2d6)
Speed 30 ft

STR 7 (-2)
DEX 15 (+2)
CON 11 (0)
INT 2 (-4)
WIS 10 (0)
CHA 4 (-3)

Senses: Darkvision 60 ft., passive perception 10

Languages:

Challenge: 1/8 (25 xp)

Keen Smell: The rat has advantage on Wisdom (Perception) checks that rely on smell.

Pack Tactics: The rat has advantage on an attack roll against a creature if at least one of the rat's allies is within 5 ft. of the creature and the ally isn't incapacitated.

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Actions

Bite: Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) piercing damage.

Giant Rat Small beast, unaligned 1/8 25 xp

Armor class 12 (natural armour)
Hit points 7 (2d6)
Speed 30 ft

STR 7 (-2)
DEX 15 (+2)
CON 11 (0)
INT 2 (-4)
WIS 10 (0)
CHA 4 (-3)

Senses: Darkvision 60 ft., passive perception 10

Languages:

Challenge: 1/8 (25 xp)

Keen Smell: The rat has advantage on Wisdom (Perception) checks that rely on smell.

Pack Tactics: The rat has advantage on an attack roll against a creature if at least one of the rat's allies is within 5 ft. of the creature and the ally isn't incapacitated.

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Actions

Bite: Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) piercing damage.

Giant Centipede Small beast, unaligned 1/4 50 xp

Armor class 13 (natural armor)
Hit points 4 (1d6+1)
Speed 30 ft., climb 30 ft.

STR 5 (-3)
DEX 14 (+2)
CON 12 (+1)
INT 1 (-5)
WIS 7 (-2)
CHA 3 (-4)

Senses: blindsight 30 ft., passive Perception 8

Languages:

Challenge: 1/4 (50 xp)

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Actions

Bite. Melee Weapon Attack:+4 to hit, reach 5 ft., one creature.
Hit:4 (1d4 + 2) piercing damage, and the target must succeed on a DC 11 Constitution saving throw or take 10 (3d6) poison damage. If the poison damage reduces the target to 0 hit points, the target is stable but poisoned for 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way.

Giant Centipede Small beast, unaligned 1/4 50 xp

Armor class 13 (natural armor)
Hit points 4 (1d6+1)
Speed 30 ft., climb 30 ft.

STR 5 (-3)
DEX 14 (+2)
CON 12 (+1)
INT 1 (-5)
WIS 7 (-2)
CHA 3 (-4)

Senses: blindsight 30 ft., passive Perception 8

Languages:

Challenge: 1/4 (50 xp)

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Actions

Bite. Melee Weapon Attack:+4 to hit, reach 5 ft., one creature.
Hit:4 (1d4 + 2) piercing damage, and the target must succeed on a DC 11 Constitution saving throw or take 10 (3d6) poison damage. If the poison damage reduces the target to 0 hit points, the target is stable but poisoned for 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way.

Giant Inferno Spider Large Monstrosity, Unaligned 1 200 xp

Armor class 14 (Natural Armour)
Hit points 32 (5d10 + 5)
Speed 30ft., climb 30ft.

STR 14 (+2)
DEX 14 (+2)
CON 12 (+1)
INT 2 (-4)
WIS 11 (0)
CHA 4 (-3)

Skills: Stealth +6

Damage Resistances: Fire

Senses: blindsight 10ft., darkvision 60ft., passive Perception 10

Languages:

Challenge: 1 (200 xp)

Spider Climb: The spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

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Actions

Flaming Bite: Melee Weapon Attack: +5 to hit, reach 5ft., one creature. Hit: 6 (1d8 + 2) piercing damage, and the target must make a DC 11 Constitution saving throw, taking 7 (2d6) fire damage on a failed save.

Burning Web (Recharge 5-6):<\b> Ranged Weapon Attack: +5 to hit, range 30/60ft., one creature. Hit: The target is Restrained by flaming webbing. While Restrained in this way, the target takes 3 (1d6) damage at the start of their turn. As an action, the Restrained target may make a DC 12 Strength check, freeing themselves from the webbing on a success. The webbing can also be attacked and destroyed (AC 12, hp 5, immunity to bludgeoning, poison, fire, and psychic damage).

Giant Inferno Spider Large Monstrosity, Unaligned 1 200 xp

Armor class 14 (Natural Armour)

Hit points 32 (5d10 + 5)

Speed 30ft., climb 30ft.

STR 14 (+2)

DEX 14 (+2)

CON 12 (+1)

INT 2 (-4)

WIS 11 (0)

CHA 4 (-3)

Skills: Stealth +6

Damage Resistances: Fire

Senses: blindsight 10ft., darkvision 60ft., passive Perception 10

Languages:

Challenge: 1 (200 xp)

Spider Climb: The spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Actions

Flaming Bite: Melee Weapon Attack: +5 to hit, reach 5ft., one creature. Hit: 6 (1d8 + 2) piercing damage, and the target must make a DC 11 Constitution saving throw, taking 7 (2d6) fire damage on a failed save.

Burning Web (Recharge 5-6):<\b> Ranged Weapon Attack: +5 to hit, range 30/60ft., one creature. Hit: The target is Restrained by flaming webbing. While Restrained in this way, the target takes 3 (1d6) damage at the start of their turn. As an action, the Restrained target may make a DC 12 Strength check, freeing themselves from the webbing on a success. The webbing can also be attacked and destroyed (AC 12, hp 5, immunity to bludgeoning, poison, fire, and psychic damage).