This set isn't listed on the index for some reason. Personally, I think that it's the best UU Pokemon and can become virutally unstoppable if you use it correctly.
Clefable, the stalling-walling fairy!
@ Leftovers
Bold | Magic Guard
252 HP, 128 Defense, 124 Special Defense
- Seismic Toss
- Toxic
- Softboiled
- Cosmic Power
Here's how to use it. Bring it in late-game when your opponent's phazer (if they even have any) is gone, and begin to set up. Cosmic Power up once or twice, then Softboiled off the damage taken. Repeat until you have six. Now, just stall your opponent out with Toxic and Seismic Toss. Switching into a Will-O-Wisp or Toxic will grant you immunity to sleep-inducing moves. Magic Guard is the real reason for Clefable's success. Immunity to Sandstorm, Hail, Leech Seed, Stealth Rock, Spikes, burn, poison, and much more.

Clefable, the stalling-walling fairy!
@ Leftovers
Bold | Magic Guard
252 HP, 128 Defense, 124 Special Defense
- Seismic Toss
- Toxic
- Softboiled
- Cosmic Power
Here's how to use it. Bring it in late-game when your opponent's phazer (if they even have any) is gone, and begin to set up. Cosmic Power up once or twice, then Softboiled off the damage taken. Repeat until you have six. Now, just stall your opponent out with Toxic and Seismic Toss. Switching into a Will-O-Wisp or Toxic will grant you immunity to sleep-inducing moves. Magic Guard is the real reason for Clefable's success. Immunity to Sandstorm, Hail, Leech Seed, Stealth Rock, Spikes, burn, poison, and much more.