Felidar Savior is a common Creature — Cat Beast card from Foundations (FDN), collector number 12. Current market price: $0.20 (foil $0.31), 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.