Nbz (Drifblim) @ Sitrus Berry/Ghost Gem/Lum Berry/Leftovers
EVs: 252 HP / 4 Def / 252 Spd
- Baton Pass
- Magic Coat/Ominous Wind/Stockpile
Passer set. The Unburden boost isn't technically passable, but it lets Drifty pass earlier. Unfortunately, despite its high HP, Drifty is really frail, so a high amount of prediction is required to let it switch in safely. The choice of Magic Coat vs. Ominous Wind is risk vs. reward. Ominous Wind is there only really to activate the GGem, and to prevent being Taunted. Taunt, however, can be reflected with Magic Coat, along with letting you get the edge on certain opponents (Dark Void Darkrai is put to sleep, Ferro and Forre are destroyed). Stockpile is really just there if you really, really need a CosmicPasser for some reason.
Sidenote: This set was inspired by Nbz (not a complete copy, though).