Alakazam G Lv X + Quagsire G + other random attacker.
Move all the damage from your attacker, onto Quagsires on the bench, which serve as damage banks as they can't be hurt while they're sitting on the bench. Having multiple Quagsires is great fun, and to re-use them, Poke Turn them back to the hand. In other words, unless your main attacker is getting OHKO'd, then it won't die for a LOOONG time. Though this may not be too competitive as it is ripped apart by Flygon for... various reasons, lol.
Snipelutions (Jolteon/Vaporeon) and Flygon look cool as well.