The Ars Goetia (or Lesser Key of Solomon) features 72 demons, bound to pay allegiance to a specific seal that a sorcerer uses for evocation. In 1904, Aleister Crowley and Samuel Liddell MacGregor Mathers published a revised English edition with some innovations.
Here, we present for the first time, our version of Cthulhu's Goetic Seal. We can't promise it will work, or that you'll have his allegiance, but we can promise you'll look great in this black work shirt with the full seal printed in green on the back and a smaller version over the left front pocket. (35/65% cotton/poly)