So I made this base, and the original intention was to create a bit of nurgle mutation stuff coming out of the ground. Looking at it, though, it's actually positioned such that I can make a big acid wound drip down from his leg and look like it's spilling onto the rock.
My two choices as far as I'm aware are making some
GS tentacles to come out of the fissure, or paint it like acid and add a
GS wound and drip above it. Thoughts?