Maelstrom Wanderer

Maelstrom Wanderer {5}{G}{U}{R}

Legendary Creature - Elemental | Power/Toughness: 7 / 5
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.)