Mysterious Shard (Crystal Guardians 81/100)

Rules

Attach Mysterious Shard to 1 of your Pokémon (excluding Pokémon-ex) that doesn't already have a Pokémon Tool attached to it. If the Pokémon Mysterious Shard is attached to is a Pokémon-ex, discard this card.

Prevent all effects of attacks, including damage, done to the Pokémon that Mysterious Shard is attached to by your opponent's Pokémon-ex. Discard this card at the end of your opponent's next turn.