With stage 2's being better now IF breakthrough Magnezone survives the rotation, I think this might be a cool deck to play with. just use Magnezone's ability to attach a ton of energy to all of your Pokemon and then sweep for a lot of damage. This could also be paired with Raikou from breakthrough then as a non EX/GX attacker to do quite some damage. I like this card a lot!
though if breakthrough doesn't survive rotation then it'll be a bit worse... :/ BUT this deck still has potential. As A bonus you will still have electrode (even though it gives up a prize) It's 2 extra lightning energy per turn. that + max elixir and your regular attachments and you're good to go. I think still will see play either way and if not by others I will try it out. It looks pretty good in my eyes.
EDIT: The GX attack, ahhh, one of my favorite GX's is Lapras and this GX attack is basically the exact same thing but it does 20 more damage, though being weakened by Guzma as you can just Guzma yourself out of the paralysis, It's still not a bad option, and definitely worth mentioning.