Keepsake Gorgon is a uncommon Creature — Gorgon card from Conspiracy: Take the Crown (CN2), collector number 141. Current market price: $0.08 (foil $0.51), TCGplayer market prices via Scryfall.
Deathtouch {5}{B}{B}: Monstrosity 1. (If this creature isn't monstrous, put a +1/+1 counter on it and it becomes monstrous.) When this creature becomes monstrous, destroy target non-Gorgon creature an opponent controls.