Altaria

It looks like a fluffy cloud when it is in flight. It hums with its soprano voice.

Dragonbreath (40): Flip a coin. If tails, this attack does nothing. If heads, the Defending Pokémon is now Paralyzed.

Cotton Cloud (60): During your opponent's next turn, any damage done to Altaria by attacks from your opponent's Evolved Pokémon is reduced by 30 (after applying Weakness and Resistance).