Deoxys-A @ Focus Sash
EVs: 74 Atk / 252 SpA / 184 Spe
Naive / Hasty Nature
-ExtremeSpeed / Stealth Rock / Ice Beam / Shadow Ball
-Hidden Power Fire / Superpower
Deoxys-A may not be what you picture as a standard suicide lead for setting up hazards, but it is arguably the only one that can stand and beat all the spinners in the game. Deoxys-A's enormous offensive presence will pretty much force a lot of switches, which is extremely helpful for getting up that extra layer of Spikes. Combine this with the ability to destroy any enemy Magic Bouncers (should they be brave enough to come in anyway) and you've basically guaranteed yourself at least 2 layers of hazards AND a weakened enemy (or just whack something with Psycho Boost)!