Atlach-Nacha, the Spider God

Beneath the mount Voormithadreth, in the cyclopean maze of caves and tunnels an ancient being of malignant intelligence spins a web of eldritch purpose - a web that will connect mortal plane to Dreamlands, changing the very meaning of reality. It worked ceaselessly for aeons as the grey wardens - alien spiders of Leng - do his bidding and keep the grand project safe from the eyes of prying mortals and lesser gods alike.