Etherium-Horn Sorcerer [Planechase 2012]

Set: Planechase 2012 Type: Artifact Creature — Minotaur Wizard Rare Cost: {4}{U}{R} {1}{U}{R}: Return Etherium-Horn Sorcerer to its owner's hand. 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.)