This is amazing! Fantastic to read through and a really solid concept.
For the Cultist idea: Perhaps they should have a law breaker stunt if they have participated in any of the rituals that involve transfering souls. Perhaps Second or third law? Its kind of hard to think what ripping someone's soul out comes under.
As for motivations, the scariest one is always when someone didnt need to be brainwashed but beleived in them and wanted to do it. Perhaps some of the cultists genuinly beleive that the Jade Court will make the world a better place when they have their day of uprising? Or maybe some them are after protection. Im guessing that the vampires would fiercely guard what is their own. Protection from the other supernatural factions could be quite an incentive.
Aspect: Paranoid eye for detail. The abilit for your boss to be literally anyone you know has meant youve become very skilled at noticing subtle differences in behaviour.
Bonus: Spotting deception and lies. Any other situation where noticing cues from body language would help
Compell:The paranoid bit. Might freak out/run away/turn jack bower on a team mate at an inconvenient time
The Chop Would the ghosts tattoo every host body they use especially if they are changing regularly? Just for clarification on the Ghosts, how often where you think they would change bodies?
Theres a suggestion for the were-wolf build on the were-form write up of having "Pack Instincts". Pehraps something similar, could it be possible that the Jiang Shi could sense each other? For instance Mouse seemed very adept at sensing other vampires
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Powers: If the dragons are each affiliated with one of the cardinal directions and each have their own Jiang shi, what about them each of them specialising in a different way of influencing people's minds or take different kinds of host bodies but this might be straying a bit too white court for your liking.
couple of questions
- what happens to the vampire spirit when the body they are inhabiting is killed or dies?
- Do you envision the remaining 5 dragons as keeping a very close relationship or having their own groups and power structures much similar to the rival white court families?