Once during your turn, when you play Ninjask from your hand to evolve 1 of your Pokémon and if your Bench isn't full, you may put Shedinja onto your Bench as a Basic Pokémon from your hand or your discard pile.

Chip Off30

If your opponent has 6 or more cards in his or her hand, discard a number of cards without looking until your opponent has 5 cards left in his or her hand.