THE WATCHER IN THE GLADE
Yibb-Tstll is an obscure god, said to watch at the center of all time as the universe resolves. Because of this insight, only YOG-SOTHOTH is said to be wiser. Its blood THE BLACK, is a weaponwhich takes the form of black snowflakes that stick to and smother a victim. Its touch causes a intant change in the person affected-this change is usually fatal but occasionally brings some benefit.
Yibb-Tstll is Sometimes described as an immobile, dark, tentacled entity with a pulpy alien head, detached eyes, and large bat wings. Yibb-Tstll is mentionned once in the Necronomicon, in the story "Rising with Surtsey" a man who enters the warp and is driven mad proclaims: "....I wanted to bound, to float in my madness through eldritch depths of on hallowed black blood. I wanted to cling to the writhing breasts of Yibb-Tstll.Insane...."