MAGIC: THE GATHERING
Search your library for a card, put that card into your hand, then discard a card at random. Shuffle your library afterward.
A tutor with a risky drawback, Gamble sees play in Legacy and Vintage decks that don't necessary see throwing cards into the graveyard as a huge obstacle - most popularly, Lands. Gamble for Life from the Loam, and then even if you discard it, you can dredge it right back.