Golgari Refusal

Sacrifice Golgari Refusal: Put X -1/-1 counters on any number of target creatures where X is the number of creature cards in
your graveyard.
Scavenge {2}{g}{g} ({2}{g}{g}, Exile this card
from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)