Clannish Brachyura

If {w} was spent to cast Clannish Brachyura, it has partner by request. (When this enters the battlefield, another player chosen at random may search your library for a card and put it in your hand. If they don't, then you may. Then shuffle.)
Dash {4}{b} (You may cast this for its dash cost. If you do, it gains haste, and it's returned from the battlefield to owner's hand at the beginning of the next end step.)