Basri's Acolyte is a common Creature — Cat Cleric card from The List (PLST), collector number M21-8. Current market price: $0.08, TCGplayer market prices via Scryfall.
Lifelink (Damage dealt by this creature also causes you to gain that much life.) When this creature enters, put a +1/+1 counter on each of up to two other target creatures you control.