Fire Lord Ozai
{3}{B}Legendary Creature — Human Noble
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.