Semi Stall with lack-luster descriptions-

B**** Please (Chansey) @ Eviolite  
Ability: Fur Coat  
Shiny: Yes  
EVs: 252 HP / 252 Def / 252 SpD  
Relaxed Nature  
- Metal Burst  
- Spiky Shield  
- Milk Drink  
- Topsy-Turvy  

Chansey is a great absorber, and can take down sturdy shedninja decently.

Reggie (Registeel) @ Rocky Helmet  
Ability: Comatose  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Impish Nature  
IVs: 0 Spe  
- Anchor Shot  
- Topsy-Turvy  
- U-turn  
- Shore Up 

This thing is meant to sit on its ass. 

Antimony (Dialga) @ Lagging Tail  
Ability: Magic Bounce  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Core Enforcer  
- U-turn  
- Sunsteel Strike  
- Shore Up  

Hazard block, imporoofs self

Stag is dead (Gengar-Mega) @ Spooky Plate  
Ability: Dazzling  
Shiny: Yes  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Shell Smash  
- Judgment  
- Secret Sword  
- Substitute  

Gets in there and destroys stuff, self improofed

Your Mom Gey (Diancie-Mega) @ Focus Sash  
Ability: Magic Guard  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 Spe  
Rash Nature  
IVs: 0 SpD  
- Mind Blown  
- Head Smash  
- Light of Ruin  
- Shell Smash  

MGuard Diancie wins games on low ladder.

Flying Fish, Bish (Gyarados-Mega) @ Safety Goggles  
Ability: Unaware  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Knock Off  
- U-turn  
- Stealth Rock  
- Haze  

Sets hazards and absorbs setup.