Aspir

1-level Evocation

Casting Time: 1 bonus action

Components: V, S, M

Materials: a blue ribbon

Duration: Instantaneous

You drain the mystical energy of a spellcasting creature. Choose one creature you can see within range. That creature must succeed on an Intelligence saving throw or lose a 1st-level spell slot if it has any. If the creature loses a 1st-level spell slot, you regain an expended 1st-level spell slot.

At higher levels: When you cast this spell using a spell slot of 2nd level or higher, a creature that fails the saving throw loses the highest level spell slot it has up to the level of spell slot you expended to cast this spell, and you regain an expended spell slot of the level that the creature lost.