Arcane Savant is a rare Creature — Human Wizard card from Conspiracy: Take the Crown (CN2), collector number 27. Current market price: $0.16 (foil $1.01), TCGplayer market prices via Scryfall.
Before you shuffle your deck to start the game, you may reveal this card from your deck and exile an instant or sorcery card you drafted that isn't in your deck. When this creature enters, copy a card you exiled with cards named Arcane Savant. You may cast the copy without paying its mana cost.