Yveltal @ Choice Scarf
Ability: Dark Aura
EVs: 204 Def / 80 SpA / 224 Spe
Timid Nature 
Foul Play
Oblivion Wing
U-Turn
Defog

Arceus @ Silk Scarf
Ability: Multitype
EVs: 200 HP / 252 Atk / 56 Spe
Adamant Nature
Swords Dance
Recover
Shadow Claw
Extreme Speed

Kyogre @ Blue Orb
Ability: Drizzle
4 Def / 252 SpA / 252 Spe
Modest Nature
Origin Pulse
Ice Beam
Thunder 
Calm Mind

Rayquaza-Mega @ Life Orb
Ability: Delta Stream
EVs: 4 Def / 252 Atk / 252 Spe
Adamant Nature
Dragon Ascent
Extreme Speed
Dragon Dance
V-Create

Groudon @ Red Orb
Ability: Drought
EVs: 248 HP /  68 Def / 192 SpD
Impish 
Stealth Rock
Precipice Blades
Rock Tomb
Toxic

Calyrex-Shadow @ Focus Sash
Ability: As One (Spectrier)
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
Nasty Plot
Draining Kiss
Psyshock
Astral Barrage