2 6:30pm CT: The list was updated to include the MTG Arena Alchemy code with its release on Dec. Twitch Prime will also periodically contain loot in the form of a preconstructed MTG Arena deck. Planeswalker tabletop decks offer codes for each card in the deck on Arena and Secret Lair drops typically offer special alternative-art codes. Players can also earn six Arena booster pack redemption codes from the purchase of a tabletop pre-release box.