Poké-BODY ⇢ Dark Condition
As long as Rocket’s Entei ex has any {D} Energy attached to it, Rocket’s Entei ex has no Weakness.

{C} → Energy Link : 10
Search your discard pile for an Energy card and attach it to Rocket’s Entei ex.

{R}{R}{C} → Volcanic Ash
Discard 2 Energy attached to Rocket’s Entei ex and then choose 1 of your opponent’s Pokémon. This attack does 60 damage to that Pokémon. (Don’t apply Weakness and Resistance for Benched Pokémon.)