Dream Lancet

A psychic bolt directly assaults a target's mind, siphoning their mental capacity. The creature must make a Wisdom saving throw. On a failed save, they will take 1d8 + your spellcasting modifier psychic damage and will grant you a stack of mental acuity. On a successful save, they will take half the damage and will grant you no stacks of mental acuity. If you gain three stacks of mental acuity, you will gain a +1 bonus to either your Intelligence or Charisma modifier for 30 seconds, your choice. This spell will not awaken an enemy that is unconscious.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each level above the 1st.