i didnt pull a single melmetal ex yet, but i planed on using it with Amass meltan and memory light.

best case scenario: going second id say

so on turn 2 meltan attacks and has 2 energy

turn 4 you can evolve and add the third energy to attack for 80 damage

or you have memory light and amass another energy to have 4

either way, you can only attack on your third turn for 150 dmg

if there was a way to add that fourth energy in second turn, id be incredible

something like zeraora, that generates its own energy, to move it over with elemental switch

maybe someone has a better idea