Thanks, Kyurem looks pretty boss. I'll make sure to use it next time I suspect in OU.

Here are the Kyurem sets:
Kyurem @ Life Orb
Trait: Pressure
EVs: 228 SAtk / 56 HP / 224 Spd
Timid Nature
IVs: 0 Atk
- Roost
- Substitute
- Ice Beam
- Earth Power

Kyurem @ Life Orb
Trait: Pressure
EVs: 216 SAtk / 56 HP / 236 Spd
Modest Nature
IVs: 0 Atk
- Roost
- Substitute
- Ice Beam
- Earth Power

The best way to decide which one to use is to open up a damage calculator and see how much damage it is doing to the steel types that switch into it.
If you can manage to set up Stealth Rock on turn 1, you should use a timid nature to outrun the base 91-98 that never run a speed-boosting nature.