I had a rather amusing sweep with my rather effective seaking set:
Seaking@miracle berry
Agility
Swords Dance
Endure
Flail

The log is below:

Seaking, go!
Cloyster, go!
Enemy Cloyster used Spikes!
Spikes are scattered on the ground!
Seaking used Agility!
Seaking's speed rose greatly!

Cloyster, come back!
Lapras, Go!
Seaking used Swords Dance!
Seaking's attack rose greatly!

Seaking used Swords Dance!
Seaking's attack rose greatly!
Enemy Lapras used Thunderbolt!
It's super effective!

Seaking used Swords Dance!
Seaking's attack rose greatly!
Enemy Lapras used Thunderbolt!
It's super effective!

Seaking used Endure!
Enemy Lapras used Thunderbolt!
Seaking Endured the hit!
It's super effective!

Seaking used Flail!
Lapras fainted!

Jynx, Go!

Seaking used Flail!
Jynx fainted!

Sneasel, Go!

Seaking used Flail!
Sneasel fainted!

Cloyster, Go!

Seaking used Flail!
Cloyster fainted!

Piloswine, Go!

Seaking used Flail!
Piloswine fainted!

Pryce: :lol
man:
Pryce: :nice strategy
Articuno, Go!

Seaking used Flail!
Articuno fainted!

man wins!
It was a bit cheap...but fun never the less.