I just got a rayquaza and i was wondering how i mega evolve it so i can sweep e4
It megas on its own, i dont know if this is necro but yea
it was 26 minutes ago not necro dont worry.
I believe you need to have it know dragon ascent for it to mega evolve
necro is if you post on a thread whos last post was like 7 months ago.
Another thing, I believe Dragon Ascent can only be learned from a tutor in the Alpha Temple who only appears after the E4 rematch