Okay, so divine soul sorcerers. I find them tricky to write and read about, honestly. Their power comes from a celestial heritage or divine spark, which sounds awesome, but it sets up this expectation of inherent goodness or a pre-ordained destiny that can flatten a character. If they're just passively 'good' because their blood says so, where's the struggle?
The real juice, for me, is when their divinity clashes with their humanity. A great example is actually from a web serial I read, not a big published book—the sorcerer was born with a saint's power but grew up in a brutal, pragmatic city. Their magic healed people against their will sometimes, a literal reflex of compassion that put them in danger. The challenge wasn't mastering spells; it was wrestling with a power that had its own moral compass, one that didn't always align with survival. That internal conflict, the fear of becoming just a vessel for a divine will instead of a person, that's compelling. Without that, they're just a cleric with a better charisma score.
And from a plot perspective, there's the whole 'chosen one' fatigue. The challenge for the author is to subvert that or make the character actively reject or misunderstand their 'gift'. Maybe the divine entity is capricious, or maybe the 'divine' soul is actually from a god of mischief or strife, twisting the typical angelic trope. The power's source being benevolent doesn't mean its application, or the demands placed on the wielder, are any easier to bear.