Fire Lord Ozai is a mythic Legendary Creature — Human Noble card from Avatar: The Last Airbender Eternal (TLE), collector number 104. Current market price: $1.03 (foil $5.75), TCGplayer market prices via Scryfall.
Whenever Fire Lord Ozai attacks, you may sacrifice another creature. If you do, add an amount of {R} equal to the sacrificed creature's power. Until end of combat, you don't lose this mana as steps end. {6}: Exile the top card of each opponent's library. Until end of turn, you may play one of those cards without paying its mana cost.