The Altar of the Brood Countdown Kit is a rare Magic: The Gathering collectible card from the Secret Lair set, manufactured by Wizards of the Coast in 2025. This LEGEND card features a borderless design and is made of card stock. It is an artifact card type with a regular finish, making it a valuable addition to any Magic: The Gathering card collection. The kit includes an English language version of the Altar of the Brood card.