Ava Rhesigold

: Whenever a creature you control dies, if it had +1/+1 counters on it, put those counters on target creature or planeswalker.
0: Exile up to two cards from any one graveyard. For each creature exiled this way, proliferate.
-X: Create a 0/0 black Ooze creature token with Wither. Put X +1/+1 counters on it, then move up to X +1/+1 counters from Ava Rhesigold onto it.