Loyal Fire Sage is a uncommon Creature — Human Cleric Ally card from Avatar: The Last Airbender Eternal (TLE), collector number 242. Current market price: $0.13 (foil $0.48), TCGplayer market prices via Scryfall.
Firebending 1 (Whenever this creature attacks, add {R}. This mana lasts until end of combat.) {5}: Create a 1/1 white Ally creature token.