The drow begins to concentrate and lets loose magical words as a ghostal spectral skeletal hands manifests next to the undead and he attempts to use it to touch it
1d20 + 4 ⇒ (12) + 4 = 16
My understanding is it is a generic D&D world. It is setting agnostic and the adventure does not venture beyond the Duchy of Aerik. I've put some info, re: local landmarks and common deities in the Discussion thread. If your character is from further afield, you may as well say that he/she "hails from a distant land" and leave it at that.
In combat what I would recommend is giving people a 24 hr from the point that the post was made to be able to respond. We live in different times zones and sometimes things just come up but 24 hours is not an unreasonable time frame to be be able to respond. If after that there is no response then the DM can do what needs to be done.
there is a difference between being proactive and not being able to do much because some people have to do everything without concern for other players in the group so please don't lecture me on being proactive. The knowledge I might have gained might have illicted another response which I didn't even get to make since the decision was made for me not even 7 hours after asking the question.