Yeah, I've run campaigns like that. You think you can make it work, but you can't.BiggusGeekus@Work said:But if it were me, I'd nuke the campaign from orbit; its the only way to be sure.
"Buffy the Orc Slayer"BiggusGeekus@Work said:But hey, if this is what you want to do, then its what you want to do. Go back to the basics. Orcs invade. Orcs are great monsters. Give the nasty ones a few levels of barbarian or adept for variety.
Or throw in a dimensional rift. The rift is to the Abyss or some other nasty place. The demons are invading at this point because, except for the ranger, there's not much in the forest. The only way to shut down the rift is to go through it and handle the problem from the Abyssal end. After he does that he'll have to find a way back home. Much plane-hopping ensues.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.