<p>This pokemon will need max HP and 200 EV in Defense and 52 in SpcDef for a balanced base bulky. Now Rest is a staple staller move and would be great for this set, though it is not ideal in a sense that Clefable is also immune to Toxic, burning, and other HP chippers due to Magic Guard. So if you want a higher PP staller go for a 40 PP move instead of rest. Though rest is still okay for this build so that it can turn the buffing corner safely. Now this pokemon overall as a staller is great because it has only one weakness: Fighting. So if you do encounter a Fighter before you are maxed out Cosmic Power, you need to switch out to a fighting sponge. Also be sure to always have Reflect and Lucky Chant up so that you don't have a wasted switch.</p>

<p>Now this pokemon could also have Light Screen instead, this is great if your team has a SpcAtk weakness or if you simply want those 10 extra PP Light Screen has over Reflect. Lucky Chant is great when mixed with Cosmic Power. In a sense that a defensive buffers biggest weakness is a Crit-Haxer like Gallade. If you have lucky chant up they can't crit you and go through your cosmic power. Thus hopefully out-stalling them.</p>

<p>Overall as a staller it has a total of 128 PP maxed out. If you go for Light Screen over Reflect you have 144 PP. If you get rid of Rest and go for a 40 PP move you will have a massive 176 PP with Reflect and a huge 192 PP with Light Screen, making this a great overall staller. Now this pokemon's only weakness is that it is very open to getting force switched though not all is lost if that happens, due to the fact that you have Lucky Chant and a Screen. Also your Cosmic Power can get out-Hazed, so be careful of that too. But aside from that, this pokemon is a grade A+ staller.</p>

<p>Now you can replace Reflect with a high PP damaging move like Pound instead. This way you will not be weak to taunters and you will have a slightly better Staller rating on this pokemon. With Pound instead of Reflect you will have 168 PP. This is great considering you will not be weak to taunters and will easily outlast thier Taunt PP with strategic switching and use of Pound.</p>