Whimsicott (Temporal Forces 015/162)

Evolves from Cottonee

Abilities

When you play this Pokémon from your hand to evolve 1 of your Pokémon during your turn, you may heal all damage from your Active Grass Pokémon. If you healed any damage in this way, discard all Energy from that Pokémon.

Attacks

It scatters cotton all over the place as a prank. If it gets wet, it'll become too heavy to move and have no choice but to answer for its mischief.