So I read the Smog and I gave the Tailwind Reshiram + Kyruem-W core a go in Ubers and not only was it super fun, but it was practical. With that in mind, I decided to try the same strategy in OU and see if it would work. Of course no Pokemon in OU had Reshiram's typing and the pool of Tailwind Dragons are almost exclusively Physical Dragon/Flying-types. There were the Lati but the Pursuit weakness and lack of ways to deal with Steel-types was just not suitable for a Dragon that needs to be switching in and out while minimizing opponent's chances to set-up. But there was one Pokemon that caught my eye:
Hydreigon @ Life Orb
EVs: 4 HP / 252 SAtk / 252 Spd
- Draco Meteor
- Fire Blast
Apparently Hydreigon got Tailwind in BW2 and to be honest, Hydreigon is almost everything I was looking for in a Tailwind user and imo it is the most reliable user of Tailwind around. Yeah Tornadus has Prankster but it can't switch in even half as often as Hydreigon. But as I was saying, Hydreigon works because there are so few things in this game that look at Hydreigon and go "I can switch into that" or "I can set up on that" and it becomes more of a "okay, what do I want to sack" situation.
To start: Modest Life Orb Draco Meteor; the end. Fire Blast for coverage is far better than what Latios can provide even if he wasn't Pursuit weak. Once Tailwind is up, just...forget your everything that could revenge Hydreigon without priority because it's not going to; not even Ditto can do anything. Probably the best thing about that coverage on Hydreigon is that the only Pokemon that really could switch in safely, bar the pink blobs, are Heatran and Tyranitar and even they are KOed by 2 Full-power Draco Meteors, if they're not running a defensive spread, which can easily be arranged by forcing them out with a switch after the first one.
Of course being at -2 from Draco opens some doors for some undesirable conditions but when Tailwind's up, Hydreigon's team is still at a major advantage as checks for some Pokemon become full counters now that they can out-pace them and for the most part it's all up to you about what you run with Hydreigon. Landorus and Jirachi can now curb-stomp the Base 108+s that would normally laugh at them, Mamoswine becomes terrifying, and Dragonite, who also gets Tailwind, becomes a borderline superhero. Those are just some examples of things that benefit greatly from Tailwind even for just 2 turns. I personally run Kyurem as Hydreigon's offensive partner for that deliciously potent Double Draco core with Earth Power & Focus Blast covering everything Hydreigon doesn't, including Rain Steels. (The strategy transferred over from it's Uber counterpart extremely well btw. I've been using it for almost a week now while being pretty high on the ladder.)
This set is just a blast to use and it works perfectly in that weird way that Agilitygross worked in 4th Gen but Tailwind makes it a team player.
Superpower can be used over Roost to deal with blobs, Heatran, and Tyranitar but losing that recovery is a hefty price.