Ragavon, Nimble Pilferer

Whenever Ragavon, Nimble Pilferer deals combat damage to a player, create a Treasure token and exile the top card of that player's library. Until end of turn, you may cast that card.
Dash {1}{b}{r} (You may cast this card with its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand
at the beginning of the next end step.)