Tsareena ex

Put damage counters on 1 of your opponent's Pokémon until its remaining HP is 30.

Heal 30 damage from this Pokémon, and it recovers from all Special Conditions.

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).

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