Zur the Enchanter is a rare Legendary Creature — Human Wizard card from Coldsnap (CSP), collector number 135. Current market price: $2.31 (foil $79.96), TCGplayer market prices via Scryfall.
Flying Whenever Zur attacks, you may search your library for an enchantment card with mana value 3 or less, put it onto the battlefield, then shuffle.