Cryogonal

“When its body temperature goes up, it turns into steam and vanishes. When its temperature lowers, it returns to ice.”

— Pokémon Black

“They are born in snow clouds. They use chains made of ice crystals to capture prey.”

— Pokémon White

“They are composed of ice crystals. They capture prey with chains of ice, freezing the prey at -148° F.”

— Pokémon Black 2