Here are some notable threats that I've thought up. A brief summary of each. I'm just gonna mention the new toys these pokemon get.
Landorus
Infernape
I'll post some more later.
Notable new moves- Hurricane, Aeroblast, Brave Bird, Roost
Landorus is already a scary pokemon in OU, being able to fire off powerful Sheer Force boosted special attacks, abuse the sand with the powerful Edge-Quake combo, and more. But, with the addition of Hurricane to it's already vast movepool, it can now abuse the rain with a super-powerful Sheer Force boosted Hurricane. Hurricane is Landorus's strongest STAB, and it rips gaping holes in pokemon that don't resist. A Rock Polish set is one of the best ways to abuse the powerful Hurricane. Aeroblast is a weaker, but more accurate alternative to Hurricane if you plan on using Landorus outside of rain, and Roost grants Landorus reliable recovery, but you probably won't use this much.
Landorus is already a scary pokemon in OU, being able to fire off powerful Sheer Force boosted special attacks, abuse the sand with the powerful Edge-Quake combo, and more. But, with the addition of Hurricane to it's already vast movepool, it can now abuse the rain with a super-powerful Sheer Force boosted Hurricane. Hurricane is Landorus's strongest STAB, and it rips gaping holes in pokemon that don't resist. A Rock Polish set is one of the best ways to abuse the powerful Hurricane. Aeroblast is a weaker, but more accurate alternative to Hurricane if you plan on using Landorus outside of rain, and Roost grants Landorus reliable recovery, but you probably won't use this much.
Notable new moves- V-Create, Sacred Sword, Blue Flare, Fiery Dance, Hi-Jump-Kick
Infernape got quite a bit of amazing new moves, being able to abuse special and psychical moves. On the psychical side, there is Hi-Jump-Kick and V-Create, two insanely powerful attacks, and on the special side, there is Blue Flare, Sacred Sword, and Fiery Dance. These moves could be abused very well on a scarf set. Fiery Dance can turn Infernape into a Special-Moxie pokemon, and V-Create and Hi-Jump-Kick are brutally scary on their own. Infernape can also abuse it's powerful fire moves in the sun, which seems to be a pretty dominating weather with Sawsbuck running around. Infernape can also be very tricky to wall now, as it is unpredictable, and can possibly run a mixed set. This Ape packs a lot of powerful moves, and is something to look out for.
Infernape got quite a bit of amazing new moves, being able to abuse special and psychical moves. On the psychical side, there is Hi-Jump-Kick and V-Create, two insanely powerful attacks, and on the special side, there is Blue Flare, Sacred Sword, and Fiery Dance. These moves could be abused very well on a scarf set. Fiery Dance can turn Infernape into a Special-Moxie pokemon, and V-Create and Hi-Jump-Kick are brutally scary on their own. Infernape can also abuse it's powerful fire moves in the sun, which seems to be a pretty dominating weather with Sawsbuck running around. Infernape can also be very tricky to wall now, as it is unpredictable, and can possibly run a mixed set. This Ape packs a lot of powerful moves, and is something to look out for.
I'll post some more later.