Hail Team Glaceon
Glaceon - Timid (^Speed -Atk) # Choice Specs/Leftovers
Snow Cloak / Ice Body (DW)
+ 252 Sp Atk EVs / 200 Speed EVs / 58 HP EVs
Blizzard (100% accuracy in Hail, STAB, just really powerful)*
Hail (JUST in case someone cancels out your wonderful Hail)
Substitute/Protect (If you get the chance to set up Only with Leftovers and Ice Body, where you will heal enough HP to actually Sub up, otherwise get Barrier, again, if you get the chance to set up)
Shadow Ball/Wish/ (You should get Wish, if with Protect, and if not, get Shadow Ball just for some extra coverage)
The idea behind this Glaceon is one of two choices basically.
Either Spam Blizzard until death with Choice Specs (make sure you use PP Max on Blizzard if this is your option)
~ or ~
Just have a normal type of Glaceon with whatever strategies you have in store for it.
Glaceon may not be useful in these situations, but you can also take advantage of its great Sp. Attack. ~