Xavian, Ruthless Conjurer

Haste
Whenever Xavian, the Ruthless Conjurer deals
combat damage to a player, that player discards
X cards, where X is the number of cards in their
hand.
{b}{r}: Exile the top card of your library. Until
the end of your next turn, you may play that
card and you may cast it as though it had flash.