Drain Lifeforce

As a bonus action you choose a target to drain their lifeforce. Starting at spell level 5 you can choose up to 5 targets, spell level 7 up to 10 and at spell level 9 up to 20.

You drain 1d10+10 at level 5, 1d12+10 at Level 7 and 1d20+10 at Level 9. You can choose to take this life force from multiple targets or one singular. You can take this from undead under your thrall with no resistance if you are using this ability on an enemy they must succeed on a wisdom saving throw 16.

This action takes until your next round to complete, during which time your target cannot move but if you are hurt or disrupted the spell ends with the target being weakened and prone for 1 round.