With Blastoise SW's attack, if I had, say 4 Water energy and a Fighting energy attached to it and used Hydro Pump, could I choose whether I do 70 or 90 damage?
My reason being, you could claim that what you "used to pay the attack's energy costs" were either three water (in which case you'd do 70- because you'd have 1 water energy that wasn't used to pay the retreat cost- 50 + 20 = 70) or that what you used to pay the attack cost were 2 water and the fighting (in which case you'd do 90- Because you'd have 2 water energies that weren't used to pay the attack cost- 50 + 20 +20 = 90).
So, how would this all work?
My reason being, you could claim that what you "used to pay the attack's energy costs" were either three water (in which case you'd do 70- because you'd have 1 water energy that wasn't used to pay the retreat cost- 50 + 20 = 70) or that what you used to pay the attack cost were 2 water and the fighting (in which case you'd do 90- Because you'd have 2 water energies that weren't used to pay the attack cost- 50 + 20 +20 = 90).
So, how would this all work?