As long as Rocket's Zapdos ex has any Energy attached to it, damage done to Rocket's Zapdos ex by an opponent's attack is reduced by 10 (after applying Weakness and Resistance).
Attack: Plasma
Damage: 10
Search your discard pile for a Energy card and attach it to Rocket's Zapdos ex.
Attack: Raging Thunder
Damage: 60
This attack does 30 damage to one of your Pokémon.