The Destined White Mage is a rare Legendary Creature — Human Cleric card from Final Fantasy Commander (FIC), collector number 444. Current market price: $13.66 (foil $14.84), TCGplayer market prices via Scryfall.
Lifelink {W}, {T}: Another target creature you control gains lifelink until end of turn. Whenever you gain life, put a +1/+1 counter on target creature you control. If you have a full party, put three +1/+1 counters on that creature instead.