My current party:
Samurott Lv. 72
Hold item: Mystic Water
Nature: Naive
Ice Beam
Revenge
Surf
X-Scissor
Stats
Attack: 197
Defense: 152
Special Attack: 167
Special Defense: 103
Speed: 157
Reshiram Lv. 70
Hold item: Expert Belt (I didn't know what to give him)
Nature: Lonely
Dragon Pulse
Fly
Psychic
Fusion Flare
Stats:
Attack: 223
Defense: 140
Special Attack: 245
Special Defense: 175
Speed: 144
Ferrothorn Lv. 70
Hold Item: Leftovers
Nature: Mild
Gyro Ball
Aerial Ace
Seed Bomb
Strength
Stats:
Attack: 164
Defense: 197
Special Attack: 117
Special Defense: 177
Speed: 63
Hydreigon Lv. 70
Hold Item: Razor Claw
Nature: Naive
Crunch
Flamethrower
Dragon Pulse
Hyper Voice
Stats:
Attack: 177
Defense: 132
Special Attack: 201
Special Defense: 133
Speed: 194
Volcarona Lv. 70
Hold Item: Scope Lens
Nature: Gentle
Flamethrower
Quiver Dance
Bug Buzz
Hidden Power (Grass)
Stats:
Attack: 110
Defense: 113
Special Attack: 218
Special Defense: 176
Speed: 188
Reuniclus Lv. 70
Hold Item: Quick Claw
Nature: Hardy
Psychic
Flash Cannon
Shadow Ball
Recover
Stats:
Attack: 128
Defense: 118
Special Attack: 196
Special Defense: 128
Speed: 73
Now here is some changes I am thinking of making. 1. Replacing Ferrothorn's Strength with Thunderbolt. 2. Replacing Reuniclus's Flash Cannon (or maybe Shadow Ball) with Energy Ball. And now here is the big change I am thinking of: replacing Ferrothorn with Aggron (would be holding Wide Lens or Zoom Lens, have Rock Head ability, and know Head Smash, Superpower, Double Edge, and either Iron Head or Iron Tail). Teaching Energy Ball to Reuniclus would also make sense if I make this change. If any of you see something else I should change, let me know.