Slitherhead is a uncommon Creature — Plant Zombie card from Return to Ravnica (RTR), collector number 222. Current market price: $0.11 (foil $0.84), TCGplayer market prices via Scryfall.
Scavenge {0} ({0}, 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.)