Gale, Waterdeep Prodigy is a rare Legendary Creature — Human Wizard card from Secret Lair Drop (SLD), collector number 2488. Current market price: $3.37 (foil $4.43), TCGplayer market prices via Scryfall.
Whenever you cast an instant or sorcery spell from your hand, you may cast up to one target card of the other type from your graveyard. If a spell cast from your graveyard this way would be put into your graveyard, exile it instead. Choose a Background (You can have a Background as a second commander.)