Castform Snow-cloud Form

Its appearance changes with the weather. Recently, its molecules were found to be just like water.

Poke-POWER — Temperament: Once during your turn (before your attack), you may search your deck for any Castform and switch it with Castform Snow-cloud Form. (Any cards attached to Castform Snow-cloud Form, damage counters, Special Conditions, and effects on it are now on the new Pokémon.) Shuffle Castform Snow-cloud Form back into your deck. You can't use more than 1 Temperament Poké-Power each turn.

Hail: This attack does 10 damage to each of your opponent's Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)