Warden of the Conflict

Dash {1}{r}{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.)

Discard Warden of the Conflict, exile the top
three cards of your library face down: Cards can't
be put into players' hands this turn, except by
drawing them.