Once during your turn, when you play Ninjask from your hand to evolve 1 of your Pokémon, you may search your deck for Shedinja and put it onto your Bench. Treat the new Benched Pokémon as a Basic Pokémon. Shuffle your deck afterward.
You may switch Ninjask with 1 of your Benched Pokémon. If you do, you may move any number of Grass Energy cards attached to Ninjask to the new Active Pokémon.