Maelstrom Wanderer [Planechase 2012]

Set: Planechase 2012 Type: Legendary Creature — Elemental Mythic Cost: {5}{G}{U}{R} Creatures you control have haste. Cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order. Then do it again.)