Kelsier, Survivor of Hathsin

As long as you control a treasure, Kelsier gains
flying
Sacrifice a Treasure: Kelsier deals 1 damage to any target.
Sacrifice 2 Treasures: Exile the top card of each opponent's library, you may play these cards until
end of turn, and you may spend mana of any color
to cast these spells.
—
After escaping the Pits of Hathsin, Kelsier vowed to get revenge on the Lord Ruler