Green Warpstone: i added a few layers to build up the green. I applied Moot green then a mix of Moot green with 2:1 Ceramite white, then a mix with 1:1 Moot green and Ceramite white, a mix of 1:2 Moot green and Ceramite white. And finally I glazed it with Waywatcher green to connect the highlights.
I kept on using Moot green and with every layer I just used one extra drop of Ceramite white.
The rock: I cut out some foam, I applied a black base, added 3 layers of PVA, then I added a black base again with a drybrush of Celestra grey.
The base is from cardboard, added some PVA, some sand, based with black and drybrushed with Codex grey
This torch is from the Skaven plague furnace kit.
The warpstone dripping of is made with green stuff
The pillar: made from foam, base coat with black, drybrushed with Rakarth flesh. Shaded with Agrax earthshade.
The bells are from the Skaven plague monks kit
The bells are attached to the pillar with green stuff