Zeraora could be put in ray decks
The thing with this is it has no cap.
It is kind of like a necrozma GX.
If you find a REALLY bulky pokemon (and there are going to be a lot of those soon),
then you power up this to take a knock out.
At the moment, the only real option to accelerate 3-4 lightning energy a turn is magnizone
but there really is no great way to get the energy back (maybe a heavy count of energy recyclers and 2 ribombees on the the bench), and if your opponent targets down your magnimite/magnizone then you lose.
Keep this card in mind though, because, just like necrozma, something will come out to accelerate the lightning easier than magnizone and poof! Zeraora decks everywhere.