Perish Body Eject Button Cursola into Sub Protect Zone so we can eliminate any other steel type, even drill- Mirror coat can be useful too/Kart to abuse openings/ Terrain to protect Kart and Rhyno for Birds.

Cursola (M) @ Eject Button  
Ability: Perish Body  
Shiny: Yes  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Ice Beam  
- Earth Power  
- Shadow Ball  
- Mirror Coat

Magnezone @ Air Balloon  
Ability: Magnet Pull  
Shiny: Yes  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Substitute  
- Protect  
- Thunderbolt  
- Flash Cannon

Kartana @ Choice Scarf  
Ability: Beast Boost  
Shiny: Yes  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Leaf Blade  
- Smart Strike  
- Knock Off  
- Sacred Sword

Tapu Fini @ Leftovers  
Ability: Misty Surge  
EVs: 248 HP / 200 Def / 60 Spe  
Bold Nature  
IVs: 0 Atk  
- Draining Kiss  
- Scald  
- Taunt  
- Defog

Mandibuzz (F) @ Heavy-Duty Boots  
Ability: Overcoat  
EVs: 248 HP / 116 Def / 144 SpD  
Bold Nature  
- Toxic  
- Foul Play  
- Roost  
- U-turn

Rhyperior @ Leftovers  
Ability: Solid Rock  
EVs: 244 HP / 20 Atk / 184 SpD / 60 Spe  
Adamant Nature  
- Stealth Rock  
- Swords Dance  
- Earthquake  
- Rock Blast