I am really liking how my Diabolic Sorcerer is turning out: my group is converting our 13th level characters in the middle of CotCT, and I was playing an Oracle. I converted into a Diabolic Sorcerer with a small feat dip into Cleric for flavor and fun.
Character's backstory: he was studying to be a cleric of Iomedae when he was framed and imprisoned for a crime he didn't commit. Iomedae took away his spellcasting powers. His brother made a deal with a devil to get him out of prison: as part of that deal, the devil granted my character some spellcasting. He didn't know where his new powers were coming from, is really mad at Iomedae and was looking for a new religion, so when we started to interact with the Pharasman church a bit during the game he (wrongly) decided it must be from her, and started worshiping her, hence the multiclass into Cleric.
Dibolic bloodline is nice because you get Produce Flame as a cantrip for reliable damage, and it gives some fun enchantment spells divine bloodline's don't usually get access to. And it fits my character story perfectly. Happy to share more of the build if anyone is interested.