- Moves that do not deal direct damage have their priority increased by one level.
- Boosts Attack by two stages for every stat drop.
Level 100 Statistics (see level 5, 50, 100)
Although Tornadus might seem like an odd choice for the Ubers metagame, it makes an excellent supporter thanks to priority Tailwind, which doubles its teammates' Speed for a short interval. This allows slow, heavy hitters to smash through their usually faster checks. STAB Hurricane is also an appealing move, given the abundance of Kyogre in Ubers, and with a Life Orb equipped, Tornadus is capable of 2HKOing many threats, making switching into it a daunting prospect. Tornadus does not come without flaws, though; it has a horrible defensive typing, no reliable recovery, and a weakness to Stealth Rock. Still, Tornadus provides a rather unique form of support, and is definitely worth a look for its ability to completely retake the momentum of a match.
Thanks to Prankster, Tornadus can use priority Tailwind before the opponent can react, and as such can end an opponent's sweep or set up a teammate's at any moment. For example, Tornadus can use Tailwind against a +1 Rayquaza (as long as it lacks ExtremeSpeed), allowing a partnered Dialga to OHKO Rayquaza after Tornadus dies, ending Rayquaza's sweep. There are a few Speed investment benchmarks that should be kept in mind when building a team with Tornadus in it. Pokemon with Base 90 Speed need to invest 124 EVs in Speed in order to outpace Timid Choice Scarf Palkia while Tailwind is in effect. Similarly, a Speed-boosting nature and 204 Speed EVs allow teammates to outspeed Choice Scarf Shaymin-S and anything below it.
Hurricane is Tornadus's most powerful STAB move, and it can 2HKO many Ubers when boosted by a Life Orb. It is recommended that Kyogre be partnered with Tornadus in order to give Hurricane perfect accuracy. Focus Blast helps to deal with the ever-present Ferrothorn, and to an extent Dialga, but Hammer Arm is an option if Chansey and Blissey are a concern; in this case, a Rash or Naive nature should be used. Grass Knot nails Groudon and Kyogre, which is important because Groudon can rob Tornadus of its accurate Hurricanes. U-turn allows Tornadus to bring a sweeper out immediately after using Tailwind, while Taunt can be used to shut down any boosting or phazing attempts, and block status moves as well.
Team Options & Additional Comments >>>
Substitute can be used to scout and block status moves. Torment neuters Choice item users and Toxic provides a last-ditch option for crippling a sweeper. A pair of Choice Specs can be equipped to increase the damage output of Hurricane, but this does not turn any notable 2HKOs into OHKOs, so they are not worth the loss of the ability to use Tailwind freely. A Bulk Up set using Flying Gem and Acrobatics is an option, but it is generally too weak, and Tornadus lacks reliable recovery so it can't survive for long anyway.
Checks and Counters
When dealing with Tornadus, it is much more important to have methods for dealing with the Tailwind recipients. Paralysis works well in this regard. Phazing moves and Protect help to stall out Tailwind's turns. ExtremeSpeed users can nail Tornadus before it can use Tailwind. If Thundurus wins a Speed tie, it can block Tailwind with Taunt. Another option is using Snatch to steal Tailwind. In terms of actual counters, Bronzong, Metagross, and Jirachi can shrug off Hurricanes and force Tornadus out. Zekrom walls Tornadus if it lacks Hidden Power Ice, and can outspeed and OHKO Tornadus with Bolt Strike if Zekrom is using a Choice Scarf. Chansey and Blissey wall it completely if Tornadus doesn't carry Hammer Arm. Skarmory walls Tornadus if it opts to use Hammer Arm over Focus Blast, but Skarmory greatly fears Taunt. Although not checks per se, Groudon and Rayquaza can rob Tornadus of its perfectly accurate Hurricanes through their respective abilities.