Looks fairly strong to have a Swarm + Megahorn combo after Focus Sash.
Set Name: Agile Utility
Scollipede @ Focus Sash
Swarm
4 HP / 252 Attack / 252 Speed
Jolly
Spikes
Swords Dance
Megahorn
Baton Pass
Use Spikes first for support. Second, since you are already fast, you can use Swords Dance if you think you or Focus Sash can take the next attack. Thirdly, Megahorn can be used before switching out if it will KO the foe, since Megahorn has 270 BP after STAB and the Swarm boost; it should be enough to at least hurt some neutral targets. If you doubt it can KO the foe then Baton Pass on the target. Baton Pass can also be used vs Rapid Spinners like Hitmontop. If Baton Passing Swords Dance is something you want even your Ghosts to take advantage of, Dusknoir or Spiritomb can use it fairly well, especially since they know powerful moves like Sucker Punch.
This Pokemon is therefore a Spiker, Baton Passer, and last resort Sweeper all in one. Of course, this is thanks to it's natural Speed, and decent Attack Stat helped by Swarm + Focus Sash which makes Megahorn usable in OU.
Scollipede also has the added bonus of absorbing Toxic Spikes.