Orthworm ex

If this Pokémon is damaged by an attack from your opponent's Pokémon (even if this Pokémon is Knocked Out), put 2 damage counters on the Attacking Pokémon for each Metal Energy attached to this Pokémon.

During your opponent's next turn, the Defending Pokémon can't retreat.

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