You point your finger, and the creature that damaged you is momentarily surrounded by hellish flames. The creature must make a Dexterity saving throw. It takes 2d10 fire damage on a failed save, or half as much damage on a successful one.
At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d10 for each slot level above 1st.
You can manifest shimmering blades of psychic energy. Whenever you take the Attack action or make an Opportunity Attack, you can manifest a Psychic Blade in your free hand and make the attack with that blade. The magic blade has the following traits:
Weapon Category: Simple Melee
Damage on a Hit: 1d6 Psychic plus the ability modifier used for the attack roll
Properties: Finesse, Thrown (range 60/120 feet)
The blade vanishes immediately after it hits or misses its target, and it leaves no mark if it deals damage.
After you attack with the blade on your turn, you can make a melee or ranged attack with a second psychic blade as a Bonus Action on the same turn if your other hand is free to create it. The damage die of this bonus attack is 1d4 instead of 1d6.
Psi-Bolstered Knack. If you fail an ability check using a skill or tool with which you have proficiency, you can roll one Psionic Energy Die and add the number rolled to the check, potentially turning failure into success. The die is expended only if the roll then succeeds. Psychic Whispers. You can establish telepathic communication between yourself and others. As a Magic action, choose one or more creatures you can see, up to a number of creatures equal to your Proficiency Bonus, and then roll one Psionic Energy Die. For a number of hours equal to the number rolled, the chosen creatures can speak telepathically to you, and you can speak telepathically with them. To send or receive a message (no action required), you and the other creature must be within 1 mile of each other. A creature can end the telepathic connection at any time (no action required).
You harbor a wellspring of psionic energy within yourself. It is represented by your Psionic Energy Dice, which fuel certain powers you have from this subclass.
Soulknife energy dice
level 3: 4d6
level 5: 6d8
level 9: 8d8
level 11: 8d10
level 13: 10d10
level 17: 12d12
Some of your powers expend a Psionic Energy Die, as specified in the power's description, and you can't use the power if it requires you to use a die when your Psionic Energy Dice are all expended. You regain one of your expended Psionic Energy Dice when you finish a Short Rest, and you regain all of them when you finish a Long Rest.