Shuckle is here for the memes right ? He can’t actually be... good can he ?
Shuckle is one of those mons that doesn't look like it has anything going for it on the surface aside from sky-high Def and Sp.D, but It could work on some specific teams, like on stall which it uses Shell Smash while having Contrary, or it uses Power Trick with sturdy, and there might be more sets, but that should list off what it could do.
(Note: Stall Shuckle will fall to status if it doesn't have rest, and Power Trick Shuckle will never work well without Trick Room, I should mention that these sets, especially the Power Trick set, can be really inconsistent, and the Power Trick Shuckle needs to be in Perfect condition too, so keep that in mind)
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(stall)
Shuckle @ Leftovers
Ability: Contrary
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Shell Smash
- Toxic
- Infestation
- Rest
________________
(Power Trick)
Shuckle @ Heavy-Duty Boots
Ability: Sturdy
EVs: 248 HP / 252 SpA / 8 SpD
Modest Nature
IVs: 0 Atk
- Power Trick
- Sludge Wave
- Ancient Power
- Hidden Power [Ice]