Ok, so a bit of a design question here. I have a dungeon that I made a long time ago (D&D 3.0) that I am going to be using. It has a “Test of the Planes” section. The dungeon is basically a room for each of the 6 elemental planes (Positive and Negitive, +4 elements) and in each room I had a combat of plane specific monsters. In Air, I had a Beholder and a couple of smoke elementals as this was a sort of demi-plain where the owner of the dungeon was testing the characters to see if they could adapt and overcome in the differing planer environments.
Short of recreating each monster, how would you run this? It was a simple test of adaptability. Can they handle each of the environments and can they find out how to get out? I had all 6 rooms attached and linked, like on a die. The way out was on each ceiling, you simply create a shadow or go through your shadow at the proper place and you are in a shadow plane corridor (one at a time) and battle a Shadow on his home plane. Then you are out.