Drigaaz, Squeaking Wrath

Whenever you gain life, target creature gets -X/-X where X is the amount of life gained.

Ruthless Squeaks
Whenever you sacrifice a creature, put a +1/+1 counter on target creature you control, then tap or untap target permanent

At the beginning of your end step, create X 1/1 white hamster creature tokens with reach where X is half the number of times you descended this turn rounded up.