"Mountain" is a Common rarity land card from the Unstable set in Magic: The Gathering, identified by card number 215. Illustrated by John Avon, it features whimsical artwork that reflects the set's humorous theme. Currently valued at $2.50, this card serves as a basic land, providing red mana essential for many strategies within the game. Its unique design and playful nature contribute to its appeal among collectors and players alike.