Prosper, Tome-Bound
Legendary Creature — Tiefling Warlock, {2}{B}{R}
Oracle Text
Deathtouch
Mystic Arcanum — At the beginning of your end step, exile the top card of your library. Until the end of your next turn, you may play that card.
Pact Boon — Whenever you play a card from exile, create a Treasure token.