I have a set for Froslass. This set already existed, but I've modified it slightly.
http://www.smogon.com/dp/pokemon/froslass
Spinblocker
Move 1: Ice Beam/Shadow Ball/Hidden Power (Fire)
Move 2:Spikes
Move 3: Taunt
Move 4: Pain Split/Destiny Bond
Item: Leftovers
Nature: Timid
Evs: 160 HP / 108 Def / 240 Spe
Why This Set Deserves to Be On-Site:
- It uses Froslass' most noticeable yet underused trait of being a Spiker that blocks Rapid Spin
- Taunts defensive Pokemon and can weather their attacks while Spiking, so it lays a beat-down on stall teams
Additional Comments:
- Brightpowder and Blizzard can work on Hail teams
- Substitute or Protect can be used over Taunt/Pain Split, but I would never recommend it as both are really important to the set
- You can use max Speed to tie with Gengar. The spread above allows you out-speed all Infernape.
Teammates and Counters:
- Other hazard set-up Pokemon, like Tentacruel and Bronzong
- Duel Screeners, like the aforementioned Bronzong
- Abomasnow for setting up Hail to abuse Snow Cloak
- Sweepers to take advantage of the Spikes, like DDtar and Lucario
- Starmie KOs with it's powerful attacks
- Forretress with enough Attack EVs can hurt with Gyro Ball
- Pursuit trappers in general
http://www.smogon.com/dp/pokemon/froslass

Spinblocker
Move 1: Ice Beam/Shadow Ball/Hidden Power (Fire)
Move 2:Spikes
Move 3: Taunt
Move 4: Pain Split/Destiny Bond
Item: Leftovers
Nature: Timid
Evs: 160 HP / 108 Def / 240 Spe
Why This Set Deserves to Be On-Site:
- It uses Froslass' most noticeable yet underused trait of being a Spiker that blocks Rapid Spin
- Taunts defensive Pokemon and can weather their attacks while Spiking, so it lays a beat-down on stall teams
Additional Comments:
- Brightpowder and Blizzard can work on Hail teams
- Substitute or Protect can be used over Taunt/Pain Split, but I would never recommend it as both are really important to the set
- You can use max Speed to tie with Gengar. The spread above allows you out-speed all Infernape.
Teammates and Counters:
- Other hazard set-up Pokemon, like Tentacruel and Bronzong
- Duel Screeners, like the aforementioned Bronzong
- Abomasnow for setting up Hail to abuse Snow Cloak
- Sweepers to take advantage of the Spikes, like DDtar and Lucario
- Starmie KOs with it's powerful attacks
- Forretress with enough Attack EVs can hurt with Gyro Ball
- Pursuit trappers in general