How could you have missed this set? It is the best ever (I've actually used it on a gimmick team in LU (kinda like Smogon's RU):
Charizard @ Lefties
252 HP 128 Def 128 SpD Bold
-Toxic
-Sub
-Roost
-Seismic Toss
Oh yeah, works like a charm.
Can't like, Articuno do this better (lol).