Oofta
Legend
On a side note, even if I were to do the psychic damage, I think there are a lot of ways to fluff it to be more evocative. The PC affected is affected in a dream, attacked or surrounded by a caustic fog that eats away their skin for example.
The important thing to me is to treat something like this as more than just a spell. Find a way to weave it into your world and it's theme. I have some borderline gothic horror in my campaigns so the psychic damage could come from a waking hallucination of being swarmed by rats that no one else can see.
Which gives me an idea for my own campaign. The group is investigating a mysterious death; the npc started screaming one day and then dropped dead. A ghost spellcaster wants someone to find their murderer and the geas is going to be passed on until someone solves it (or destroys the ghost). I think my group would really have a lot of fun with this but it's definitely not something for every group. I'd also want to have alternative solutions instead of seeking vengeance for the ghost.
The important thing to me is to treat something like this as more than just a spell. Find a way to weave it into your world and it's theme. I have some borderline gothic horror in my campaigns so the psychic damage could come from a waking hallucination of being swarmed by rats that no one else can see.
Which gives me an idea for my own campaign. The group is investigating a mysterious death; the npc started screaming one day and then dropped dead. A ghost spellcaster wants someone to find their murderer and the geas is going to be passed on until someone solves it (or destroys the ghost). I think my group would really have a lot of fun with this but it's definitely not something for every group. I'd also want to have alternative solutions instead of seeking vengeance for the ghost.