i believe I can flyyyyyyyy
Drifblim @ Flying Gem
EVs: 252 Atk / 52 Def / 204 Spd
- Destiny Bond
This set is just amazing. With the flying gem, acrobatics becomes awesomely powerful and OHKOs anything in NU that isn't a rock type. It also doubles your speed thanks to unburden. You can now set up a substitute freely, to block any status your opponent might throw at you, or just let it be destroyed. Then, on the next turn, disable whatever move they used on it! Drifblim has 3 fantastic immunities, as well as a 4x resistance to Bug, so many Pokemon in the tier will only carry one move that can hit it. By disabling it, you get another free sub, and can force easy switches. When you run out of HP, you can use destiny bond ( the ultimate troll move ) which coupled with your blistering speed, can guarantee you another KO.
With good play, this set can net you at least two, usually three kills per game. It works great in conjunction with hazards, to both take advantage of the switches it causes and get KOs more easily. It also has the handy bonus of spinblocking them, supporting your team even more. The EVs maximise Attack, obviously; by investing none into HP its health is indivisible by four letting it set up four subs in total ( three if you switch in on stealth rock ) and the speed EVs let it outspeed basically the whole tier, even choice scarfed, after the unburden boost. Note that this one has trouble with Rock types, specifically those that carry Rock Blast, since it can break its substitutes and kill it. Even so, destiny bond will help you bring it down with it.