Stall Pokemon

Aegislash @ Mental Herb
Ability: Stance Change
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
- King's Shield
- Toxic
- Rest
- Iron Defense

Ampharos @ Ampharosite
Ability: Static
EVs: 107 HP / 135 Def / 136 SpA / 130 SpD
Calm Nature
- Cotton Guard
- Thunderbolt
- Dragon Pulse
- Rest

Garchomp @ Garchompite
Ability: Rough Skin
EVs: 252 HP / 140 Def / 32 SpD / 84 Spe
Impish Nature
- Dragon Tail
- Rest
- Earthquake
- Sleep Talk