so, for a while, I have been trying to find a way to create a ghost or other monster that can possess the body of a character, I think this may have done it. In the process, I though of a feat that would be the opposite, how to fight and expel monsters like that.
I would like feedback on how to improve these, so I can submit them to the wiki. I specifically wonder if I should leave exorcist as one feat with multiple levels or break it into a series of feats that are related.
Any critiques are welcome
Possession
Cost: 2
Prerequisites: Influence 5 or Higher
Description
When you control a creature, whether through mind-altering magics or occupying their same space through advanced teleportation technology, You merge with the target, controlling them from within.
Effect
When you take control of a creature within 10 feet of you using the dominated bane, you merge with the creature, occupying the same space. The creature is still subject to all of the effects of the dominated bane, except that you are aware of the actions that the creature is capable of taking. While within the creature, you take half of all damage the target takes and are unable to move due to being bound to the creature. Your possession ends when the target resists your dominated bane.
Exorcist (1-3)
Cost: 2
Prerequisites: Learning, Logic, Creation, or Protection 5
Description
You are well versed in the lore surrounding possession. You are quite perceptive at noticing the signs of a possession and how to combat it. You may be a church-sanctioned exorcist expelling ghosts and demons from the body of a poor child, or an adept computer programmer who can identify and isolate a rogue AI within a robot. Whatever the creature doing the possession, you can fight it more effectively.
Effect
Tier One:
You have advantage 1 on perception checks to track and Identify signs of a possessed creature. In addition, when you attack a creature that is a possessed by another, the possessing creature takes an equal amount of damage to the creature that it is possessing.
Tier Two:
If a creature is being possessed, you may spend an hour with the possessed creature focusing specifically on expelling the possessed creature. The possessed creature has advantage 1 on resist rolls against the dominated bane, and if it has already failed 3 rolls for the day, it may now attempt an additional roll.
Tier Three:
You may now attempt to break the possession as a focus action on your turn. Each round that you focus, the target may make a resist check with advantage 1. You also have advantage 2 on perception rolls to identify possession.