Cm thunder clefable

Clefable @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 244 SpD / 12 Spe
Calm Nature
IVs: 0 Atk
- Calm Mind
- Moonblast
- Thunder
- Soft-Boiled
this win condition core is nasty, especially if you choose to run heal bell>eq. being your two win conditions, they can't get statused (cm clefable HATES being paralyzed). thunder nails targets like toxapex and metal birds, while being a potential lure against heatran, which can get paralyzed. the offensive sinergy is really that simple, but the two are win conditions for entirely different matchups. for example, corvi+koko structures can ruin dragonite's life, but this clefable abuses them. in general, clefable is more effective on bulky teams that rely on status/passive damage to check things. dnite has heal bell, but mono-flying isn't nearly as good neutral coverage as fairy-electric. on the contrary, more offensively oriented teams with physical breakers like shifu or rillaboom can overwhelm clefable but risk being destroyed by a dragonite that can't be statused. zeraora is mildly annoying to this core, but you have teammates. also dnite has the bulk to set up on it to the point where dual wingbeat kills it, funnily enough, but you better have a zera check/counter anyway. unaware clefable is a huge deal against this core, so you must have a plan to crack it open. thankfully it isn't that common, but it's the hardest counter to this core so keep it in mind.
DEFENSIVELY, however, the sinergy is still brilliant. spdef clef tries its best to handle kyurem and dragapult for dnite, while dnite has typing and bulk to offensively handle big guns like the aforementioned rillaboom and urshifu for clefable. this win condition core still holds tremendous defensive utility between each other and overall in the team builder.
for this reason i went with a specially defensive spread on clefable. on that note, those 12 speed evs are for creepwars and beating other clefables. However, if you want more power from clef then by all means use life orb>leftovers and a different spread altogether. for example, 108 modest clef ohkos pex at +1, while neutral 44 always 2hkos it unboosted