Metastatic Evangel is a uncommon Creature — Phyrexian Human Cleric card from Modern Horizons 3 (MH3), collector number 393. Current market price: $0.77 (foil $0.84), TCGplayer market prices via Scryfall.
Whenever another nontoken creature you control enters, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)