Zhao, Ruthless Admiral is a uncommon Legendary Creature — Human Soldier card from Avatar: The Last Airbender (TLA), collector number 252. Current market price: $0.10 (foil $0.24), TCGplayer market prices via Scryfall.
Firebending 2 (Whenever this creature attacks, add {R}{R}. This mana lasts until end of combat.) Whenever you sacrifice another permanent, creatures you control get +1/+0 until end of turn.