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.
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After escaping the Pits of Hathsin, Kelsier vowed to get revenge on the Lord Ruler