Etherium-Horn Sorcerer is a rare Artifact Creature — Minotaur Wizard Sorcerer card from Planechase 2012 (PC2), collector number 91. Current market price: $0.38, TCGplayer market prices via Scryfall.
{1}{U}{R}: Return this creature 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 in a random order.)