Diachronos

** Moveset: [[Heat Wave]], {{m|Flamethrower}}, [[Aura Sphere]], [[SolarBeam]]; Held Item: [[Leftovers]]

::Ho-Rainbow is Groundlord's main partner. Not only does he have immunity to Earthquake, but he also has several moves that take advantage of the guaranteed sunlight. I'm starting to consider swapping Heat Wave for [[Follow Me]], since there's hardly ever TWO targets getting hit (Groundlord's faster, so his move usually knocks one out); it would help deal with the Flame Orbs and Houndooms.  

** Moveset: [[Spacial Rend]], Aura Sphere, [[Ice Beam]], {{m|Psychic}}; Held Item: [[Expert Belt]]

::Diachronos is mostly there to take over as a Special Attack user in case Ho-Rainbow drops, but that doesn't mean he's no good at dishing out pain. He has Spacial Rend for STAB against types he can't trump and Ice-resistant Dragon-types; Ice Beam and Psychic offer protection from Ground and Fighting types. Aura Sphere is there mainly to give him more versatility (plus I just love the move, especially the animation).