For double battles, my Togekiss & Flygon pair tends to sweep lots
Modest +Sp.Ak +Speed EVS Togekiss's Serene Grace screws up with Thunder Wave + Air Slash, has Dazzling Gleam for coverage, & Ancient Power/Aura Sphere (depends what Togekiss I'm using)
Adamant Levitate Flygon w/ Earthquake, Outrage, Rock Slide, & Earth Power
It's a kinda out there pair but it works so