Rusty Metal: Leadbelcher, Agrax Earthshade all over, Typhus Corrosion for rusty areas, drybrush rust with Trollslayer Orange, highlight Stormhost Silver
Plague Smoke: Celestra Grey, Biel-Tan Green all over, second coat of Biel-Tan Green near source, drybrush Ulthuan Grey and very minimally Vallejo White
Warpstone: Celestra Grey to help paint white, Vallejo White, Hexwraith Flame all over and slightly onto surroundings to make glow
Base: Vallejo Brown Earth Texture, Dryad Bark, Agrax Earthshade all over, light drybrush Screaming Skull, Dryad Bark rim