Jayden, Barrington's Atrocity

Remove 2 +1/+1 counters from a creature
you control: put a -1/-1 counter on target
creature you don't control
Remove 4 +1/+1 counters from a creature
you control: destroy target non-black creature.
{t}, Remove 10 +1/+1 counters from a creature
you control: search your library for a card
and reveal it, then put it into your hand