Golgari Decoy is a uncommon Creature — Elf Rogue card from Return to Ravnica (RTR), collector number 127. Current market price: $0.12 (foil $0.49), TCGplayer market prices via Scryfall.
All creatures able to block this creature do so. Scavenge {3}{G}{G} ({3}{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.)