Disclaimer: I am fairly new to competitive pokemon, and even newer to Ubers , if I make a
mistake, please correct me
Some Thoughts on the effect of the shift on Certain Pokemon
Aegislash
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While Aegislash will (probably) be a massively dominant force in OU, it's hard to tell how powerful it will be in Ubers,
It will (probably) become a counter to the ever present GeoXerneas and Arceus-Fairy, and with a potential decline of Rayquaza
and (maybe) Kyurem-W, it could become extremely hard to counter, but that remains to be seen.
Kyogre
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Ah, Kyogre, king of Ubers, Kyrogre gets one pretty massive benefit this gen, a drop in it's number one counter, Scarf Palkia,
thanks to the aforementioned GeoXerneas and Arceus-Fairy, It may become even more powerful, but alas, not everything
is good for the king, the new weather nerf this gen will be pretty bad for 'ogre, as it's Choice Specs sets will no longer have the continous
rain they need for damage.
Blaziken
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With Blaziken getting the eviction notice from OU, it now is back in it's old tier, this time with a new toy to play with,
It's mega, As the only viable mega in ubers, the lack of life orb recoil gives it much more survivability, giving it a chance to
outspeed pretty much anything in ubers (with deoxys-s, in OU right now), As said by Serebii in it's PoTW, it is the
strongest non legendary pokemon in the game.
edit: completely forgot about ho-oh with Aegislash, thanks to the buff to defog ho-oh's typing isn't as bad anymore, as such, it will be an ever present check to Aegislash that
should always be taken into account