>>22725458Greninja has no place in OU.
Mawile maybe, but while Aegislash has obtained new checks and even what you could loosely call "counters" these exist mostly in the form of Megas like Swampert and especially Sableye, while Greninja, one of its most prominent checks, is gone.
Now, the problem with Aegislash isn't that its THAT OP anymore, but that it can still run a ridiculous ammount of sets for just about any playstyle you can think of and would again streamline the metagame and impose as much of a burden in teambuilding as before. Not to memtion how its such a natural fit for Sableye stall, murdering fairies for Sableye without a care in the world for fighting types and being much less threatened by fire than sizor amd having the capacity of ruining Mega Lopunny's day with King's Shield. Not to mention how many stuff would drop the fuck out of OU just by virtue of Aegislash coming down.
So yeah, Aegislash back = End of all things fun.