Venomous Hierophant is a common Creature — Gorgon Cleric card from Ravnica: Clue Edition (CLU), collector number 125. Current market price: $0.09, TCGplayer market prices via Scryfall.
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) When this creature enters, mill three cards. (Put the top three cards of your library into your graveyard.)