CB Aggron is making for a pretty great lead actually, getting immediate damage on the opposing team from the get go, even 2HKOing the defensive behemoth that is Uxie (an amazing feat for a physical attacker considering it's not hitting super effectively). 252/0 Spiritomb is guaranteed to be OHKOed as well, as is 168 HP Mesprit about 50% of the time. I'm using Aggron with a Heal Bell Uxie with SR to get rid of any annoying Thunder Waves thrown at it, and with Toxicroak to absorb Water attacks as well as to make the most of weakened Uxie.
Heal Bell Uxie is CB Aggron's best friend, with the obvious defensive synergy and the fact that Aggron can now absorb status, get the kill, and then get healed for later use. This is especially useful as a surprise after your opponent has written off Aggron. Enemies like Rotom, bulky Mismagius, Weezing, and Arcanine will try to force Aggron out with the treat of Will-o-Wisp, but will be crippled or KOed by Head Smash should Aggron opt to take the burn and stay in. Being able to stay in somewhat reliably in those situations is an awesome advantage. It's also great when they decide to paralyze you with Uxie to allow Milotic to counter you, as they'll lose Uxie if they try to do it again, or they'll fail to counter you with whatever needed the paralysis.














