Smeargle.

Poké-PowerMakeover

Once during your turn (before your attack), you may discard a basic Energy card attached to 1 of your Pokémon (excluding Pokémon-ex). If you do, search your discard pile for a basic Energy card (excluding the one you discarded) and attach it to that Pokémon. This power can't be used if Smeargle is affected by a Special Condition.