Kalonian Hydra is a Mythic rarity card from the Commander 2016 set of Magic: The Gathering, featuring artwork by Chris Rahn. Valued at $5.45, it showcases a powerful creature mechanic that allows players to double the number of +1/+1 counters on it whenever it enters the battlefield. As a sought-after card for both collectors and players, its unique abilities contribute to its market presence within the game.