is dragonite pokemon card rare #5 “Pokémon: The First Movie” WB Black Star Promo Pokémon {250/193}Mega Dragonite ex | Japanese

Like most Magic: The Gathering cards, the value of Release the Gremlins depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (The List)

As far as their rarely used ultimates, I think both are going to help you win the game here if you get to them

Credit: Wizards of the Coast Benevolent Hydra FromTheShire: Anything that doubles counters or tokens is highly prized, and this is no different

The Green one Leyline of Mutation lets you play your stuff with the alternate one mana of each color option, like Fist of Suns, and this cannot be played outside of that color combo in Commander