Prompt: A mysterious and difficult to find boss, massive entity cloaked in gleaming obsidian armor living in the caves of nah-lur. He is holding the (archon key) and a (forgotten chalice) with which he is openening a (purple dimensional rift:1.3). His body appears to be composed of compressed rocks and minerals, with glowing, lava veins coursing through his breathing skin. His eyes are burning orange gemstones that emit an eerie glow. His name is Zaladreng the darkener 
Negative prompt: EasyNegative