Swampert (EX Emerald 11/106)
Poké-POWER Water Cyclone

As often as you like during your turn (before your attack), you may move a Water Energy attached to 1 of your Active Pokémon to 1 of your Benched Pokémon. This power can't be used if Swampert is affected by a Special Condition.

Spinning Tail

Does 10 damage to each of your opponent's Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Water Water Colorless
Aqua Sonic

This attack's damage isn't affected by Resistance.