Tetsuro Hoshino, Relentless

Whenever Tetsuro Hoshino, Relentless 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.)