Breaking Impact says "Choose 1 of your opponent's Pokemon. This attack does 10/20 damage to that Pokemon for each energy on that Pokemon's retreat cost (after applying effects to the retreat cost)." and Slimey Water "Does 10 damage times the number of energy on the Defending Pokemon's retreat cost (after applying effects to the retreat cost)." Now I am wondering what does "after applying effects to the retreat cost" actually means?? Can anybody help me?