Ajani Resolute is a mythic Legendary Planeswalker — Ajani card from Reality Fracture (FRA), collector number 291. Current market price: $10.56 (foil $15.13), TCGplayer market prices via Scryfall.
Whenever you gain life, put a loyalty counter on Ajani. 0: You gain 1 life. −4: Create a 2/2 white Cat Soldier creature token named Ajani's Pridemate with "Whenever you gain life, put a +1/+1 counter on this token." −10: You get an emblem with "Creatures you control get +2/+2."