Cornerstone Mask Ogerpon ex (Twilight Masquerade 199/167)

Rules

As long as this Pokémon is on your Bench, prevent all damage done to this Pokémon by attacks (both yours and your opponent's).

Pokémon ex rule: When your Pokémon ex is Knocked Out, your opponent takes 2 Prize cards.

Tera: As long as this Pokémon is on your Bench, prevent all damage done to this Pokémon by attacks (both yours and your opponent's).

Abilities

Prevent all damage from attacks done to this Pokémon by your opponent's Pokémon that have an Ability.

Attacks