Ashen Advancer

Whenever Ashen Advancer 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}{r} (You may cast this spell for 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.)
(Ragavan, Nimble Pilferer - Monkey Pirate)