So, my players are gonna be fighting the spectral form of Ebondeath soon. He has the stat block of a ghost, except with a few differences (the biggest one being he has access to the possessed’s knowledge and abilities). My question is more of a generic ghost — while possessing a creature, could the ghost still use its horrifying visage ability as an action, or would they have to leave the body first?
So, my players are gonna be fighting the spectral form of Ebondeath soon. He has the stat block of a ghost, except with a few differences (the biggest one being he has access to the possessed’s knowledge and abilities). My question is more of a generic ghost — while possessing a creature, could the ghost still use its horrifying visage ability as an action, or would they have to leave the body first?
No it can't because when a ghost possess a creature it disappears and it's horryfying visage only work on creature that can see it.
What plaguescarred said. "Disappears," "can see it," ...