Give a Pokemon one existing move that would not only thematically fit them but make them viable at the same time.

I'll start with pic related getting Shell Smash

From the look of decent 100/108 attacking stats, it can not only hit harder than Cloyster, but it can also attack in any side of the spectrum at the same time. Its movepool isn't so shabby for a mixed sweeper either:

Physical:
Waterfall/Aqua Tail/Aqua Jet(after a boost, it will outprioritize Talonflame)
X-Scissor/Megahorn
Knock Off
Superpower
Iron Tail

Special:
Surf/Hydro Pump
Ice Beam/Blizzard
Grass Knot/HP Grass
Air Slash

Can anyone tell me a physical or special wall in OU that can get past this movepool after Samurott gets a smash up?