I think most Ubers players know how much I love Tyranitar in Ubers. Simple set I'm running:
Tyranitar @ Leftovers
Ability: Sand Stream
EVs: 252 HP / 56 Atk / 200 SpD
Nature: Brave / Adamant
- Low Kick
- Ice Beam / Stealth Rock
This will be even more effective when Soul Dew and Shadow Tag Chandelure is released, but so far, you can take down stuff like Giratina-O and Lugia with it. Mixed Giratina-O is removed by Pursuit or Crunch, since it really can't do anything back to you, while Lugia can sometimes be taken out by Def drops from Crunch followed by Pursuit. Low Kick deals a lot of damage to Dialga, while I used Ice Beam because Gliscor is a piece of shit.
Whatevs sig. QC member for OU and Ubers, VM me for a look at your analysis. Just make sure it's good.
Also, if you want me to rate your team (OU/DW OU/Ubers), give me a VM. If I don't rate it, it's either 1) it's so shit it's too much trouble, 2) I'm busy, or 3) the team is fantastic and I have nothing I can suggest to you. You should be able to recognise which one.