>>25303674Minimize/ Focus Energy/ Stockpile/ Baton Pass
Max Def and SpDef because its HP is so high that investing too much into it is very inefficient
Unburden with either sitrus berry for longevity or a mental herb to avoid one taunt.
>But muh evasion banFine.
http://www.smogon.com/dex/xy/pokemon/drifblim/Make it a bulky/speedy calm mind set up sweeper.
Or make it an annoying stall mon.
or a physical attacker.
Honestly, it's surprisingly versatile. It just doesn't really excel at much, other than being a pretty good baton passer.