

Moveset(s):
Haxorus @ Lum Berry (Set 1)
Ability: Mold Breaker
EVs: 252 Spd / 252 Atk / 4 HP
Jolly Nature
- Dragon Dance
- Dragon Claw
- Earthquake
- Poison Jab
Haxorus @ Choice Scarf (Set 2)
Ability: Mold Breaker
EVs: 220 Spd / 252 Atk / 36 HP
Jolly Nature
- Outrage
- Superpower/Rock Slide
- Earthquake
- Poison Jab
Haxorus @ Leftovers (Set 3)
Ability: Unnerve
EVs: 248 HP / 12 Atk / 248 Def
Impish Nature
- Substitute
- Dragon Tail
- Poison Jab
- Rest/Earthquake
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There really aren't many sets for Haxorus which makes it predictable sometimes. Now, let's go over the sets:
Set 1 consists of a Dragon Dance sweeper set, which is the best Haxorus set in my opinion. After setting up a Dragon Dance (or two), you can easily pull off a sweep. If a Specially Defensive Rotom tries to burn you and you have the Lum Berry, then they probably will get KO'ed by the upcoming Dragon Claw/Earthquake. Mold Breaker in conjunction with Earthquake hits Levitate Users (Ex: Rotom-Wash/Rotom-Heat) really hard and will probably OHKO from the HP they're at.
Set 2 is a Choice Scarf set with 36 HP for added bulk and max attack for high KO potential (which is what you want with Haxorus). The rest goes in Speed to work with the Choice Scarf. You want Outrage, because Outrage + Choice Scarf is a good combo overall. Though you'll be locked into a move, Outrage only lasts for 2 - 3 turns. You'll probably hit something, and then hit it again, because the opponent is foddering that Pokemon off, so their Fairy can come in. All together, that is 3 turns which is what you want. Superpower can hit some things like a Skarmory for about 30% - 57% damage. Earthquake + Mold Breaker once again and Poison Jab for Fairies. Rock Sldie can hit Charizard-Mega-Y after outspeeding.
Set 3 is a tank set designed by me. I run 248 HP for the bulk and Max Defense (Impish Nature). The rest goes in attack just for added power. Dragon Tail is a shifting move (Roar/Whirlwind) and stops set up sweepers. After getting behind a sub you can Dragon Tail freely. Poison Jab hits fairies, but you get walled by Mawile. What must you do then? I'd run Earthquake over Rest, but that would give it a more offensive presence. That isn't what we want. I'd go rest over Earthquake just for this set. When a Belly Drum Azumarill tries to use its Sitrus Berry, my Unnerve breaks the Sitrus Berry. I can proceed on with my life and kill with Poison Jab.
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What are the chances/ratings of Haxorus going to OU?
I wouldn't say the possibilities are too high, but I like the chances. It is very viable in OU though having verry little sets. It gets an amazing ability and hits almost everything in the OU tier super effective. It has an okay speed tier. If ran with a Choice Scarf it can outspeed Charizard-Mega-X and OHKO with Outrage. Rock Slide hits Talonflame AND Charizard (big threats in OU) with Super Effective damage. I think Haxorus has a big chance to become OU if it gets more usage/play. What are you guys' thoughts on this? :)
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Eh, I don't really know if this was the right place to post this..It says OU and I'm talking about OU..so.. >.>