Time Shard (Aquapolis 135/147)

If the Pokémon this card is attached to is Knocked Out by damage from the Defending Pokémon's attack during your opponent's turn, you may return up to 2 basic Energy cards attached to that Pokémon to your hand.

Card rule

Attach Time Shard to 1 of your Pokémon that doesn't already have a Pokémon Tool card attached to it. If that Pokémon is Knocked Out, discard this card.