Thanks to PsychicNature for suggesting this! It NEEDS a Mega evolution!

So.... Did you all know that game freak was going to make a Mega Flygon for ORAS but didn't because they couldn't come up with a design? Well I can, so here it is:
Mega flygon gains the (made up) Deserts Fury ability, summoning a ferocious sandstorm that is in the tier with Desolate Land and Primordial Sea. This sandstorm has the usual effects of sandstorm but knocks flying types and levitators out of the air. This cant be changed by normal weather. This compliments Flygons powerful ground moves like earthquake. Flygons attack increases to a frightening point and makes it a threat. It also gets smaller boosts to its speed and sp attack. It remains a dragon and ground type. Its appearance changes, with its wings more powerful and longer and its tail longer and more powerful as well so it can kick up monstrous sandstorms. It also gets an orange crest around its eyes to portect them from sand and the orange crest continues to a stripe down its body.
Stat boosts:
50 attack
35 speed
15 sp attack