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.)

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