Unaware Clefable is astounding. With leftovers and softboiled and heal bell nothing can status it down, nothing can boost up their stats, it shuts down dragons, it continuously heals right back up, and its movepool is spectacular. Moonblast is a great stab, boltbeam is ok, fireblast is great, hell you could run belly drum + knock off. On the support side we have sing, stealth rock, sunny day, rain dance, screens, gravity, and so much more.
Try Unaware Clefable! Literally the only thing you need to avoid is Steel STABs