'Heart of Shadow' cavern encounter map

[Jacktannery]

I am doing an encounter map for Myrhdraak's Prince of the Undead Conversion (here wizards.com). The map is for encounter G16: The Heart of Shadow of the P3 conversion, a sinister underground place in the Shadowfell.

The brief: 'My thinking so far is a cavern with different "platform levels", each one with a blood shadow pool where the "water" runs down the platforms in a number of waterfalls to meet in the central pool at the bottom. Rough staircases have been cut out from the stone platforms to allow access between the platforms. As the players arrive, they will be divided and appear randomly from different pools in the area. Isilus with his False Keepers will try to prevent the adventurers from reaching the central pool. The shadow slime moves "invisibly" under water to attack the adventurers. Isilus can also move the Living Walls hazard by sacrificing one attack.' There are living walls, blood pools, different ground levels and stone staircases on the map. Here's the sketch by Myrhdraak.



EDIT: First WIP - just trying out some concrete textures for the feel and colour. I am going to try and stick with the original sketch's colour scheme.