Stall Mega Sableye

Sableye @ Sablenite
 Ability: Prankster
 EVs: 252 HP / 252 Def / 4 SpA
 Bold Nature
 - Will-O-Wisp
 - Recover
 - Dark Pulse
 - Calm Mind

Tentacruel @ Black Sludge
 Ability: Liquid Ooze
 EVs: 224 HP / 252 Def / 32 Spe
 Bold Nature
 - Rapid Spin
 - Acid Spray
 - Scald
 - Knock Off

Chansey (F) @ Eviolite
 Ability: Natural Cure
 EVs: 4 HP / 252 Def / 252 SpD
 Bold Nature
 - Aromatherapy
 - Soft-Boiled
 - Seismic Toss
 - Toxic

Jirachi @ Expert Belt
 Ability: Serene Grace
 EVs: 132 Atk / 160 SpA / 216 Spe
 Mild Nature
 - Iron Head
 - Icy Wind
 - Hidden Power [Ground]
 - Thunderbolt

Slowbro @ Leftovers
 Ability: Regenerator
 EVs: 252 HP / 252 Def / 4 SpA
 Bold Nature
 - Slack Off
 - Ice Beam
 - Scald
 - Flamethrower

Clefable @ Leftovers
 Ability: Unaware
 EVs: 252 HP / 252 Def / 4 SpD
 Bold Nature
 - Moonblast
 - Wish
 - Protect
 - Thunder Wave