Mine

Shuckle (M) @ Leftovers
Trait: Sturdy
EVs: 252 HP / 236 Atk / 16 Def / 4 SDef
Impish Nature (+Def, -SAtk)
- Acupressure
- Rollout
- Rest
- Power Trick

Shuckle (M) @ Leftovers
Trait: Sturdy
EVs: 252 HP / 228 Def / 28 SDef
Careful Nature (+SDef, -SAtk)
- Wrap
- Toxic
- Encore
- Rest

Shuckle (M) @ Choice Band
Trait: Sturdy
EVs: 252 HP / 252 Atk
Brave Nature (+Atk, -Spd)
- Rollout
- Gyro Ball
- Bug Bite
- Stone Edge

Shuckle (M) @ Choice Specs
Trait: Sturdy
EVs: 252 HP / 252 SAtk / 4 Spd
Modest Nature (+SAtk, -Atk)
- AncientPower
- Earth Power
- Sludge Bomb
- Hidden Power [Fire]

Shuckle (F) @ Smooth Rock
Trait: Sturdy
EVs: 252 HP / 40 Atk / 216 SDef
Adamant Nature (+Atk, -SAtk)
- Stealth Rock
- Sandstorm
- Attract
- Stone Edge

Shuckle (F) @ Leftovers
Trait: Sturdy
EVs: 252 HP / 252 Def / 4 SDef
Impish Nature (+Def, -SAtk)
- Swagger
- Bide
- Captivate
- Sand Tomb