Well for non-weather teams the Skarmory + Gastrodon + Heatran core is pretty solid. Each of these pokemon do exceptionally well against each of the weather teams, so that's a good core to build your team around.
Um, welllll..... Something has been going crazy in my game, and a lot of stuff seems to be messed up, but I sort of got it;
Eevee -Timid (I can evolve it after it learns Bpass)
31/13/30/30/31/31 HP GRASS 68
Hatched: ChargeStone Cave
(it's non shiny) You know how I said it was kind of messed up? Well, I've done this spread half a dozen times before, but for some reason, though the atk always used to be 31 (which gave 70 power hidden power with this spread), it's 13 instead =[
I hope this still works though, and if those 2 base power points are that much of an issue, I could charge 3 credits instead =/ (hopefully, however, it's not much of a big deal)
We keep missing each other! I have really weird hours but how bout we set a time for Friday? How does 2:00pm(PST I don't know what timezone you're on) work for you? Let me know I should be around all day Friday as its my day off.