OnyxSkull Caverns: Dyson's Dodecahedron

Sometimes a campaign needs a ridiculous skull-shaped dungeon when it is time to delve against some obviously evil foes… OnyxSkull Caverns (300 dpi promo) These ominous caves along the Onyx Defiles were claimed by [Insert Ancient Creepy Group] who used magic and the labour of their [Insert Insane Hu