Unwelcome Sprite is a uncommon Creature — Faerie Rogue card from Lorwyn Eclipsed (ECL), collector number 81. Current market price: $0.22 (foil $0.37), TCGplayer market prices via Scryfall.
Flying Whenever you cast a spell during an opponent's turn, surveil 2. (Look at the top two cards of your library. You may put any number of them into your graveyard and the rest on top of your library in any order.)