Carlem Aber Camerinthum Purchai Gabindo is a spell used in the summoning and banishing of the demon Delrith. The spell was obtained by the hero Wally Prysin when it was delivered to his house, word by word, by an unknown person. It was originally used by Wally to defeat Delrith after he appeared at the stone circle south of Varrock. Years later, Denath would lead a group of cultists, using the incantation to summon Delrith.
In the historical version of Demon Slayer, a variation of the spell was used by an adventurer to banish Delrith, a feat they had been prophecised to do by Gypsy Aris. The words were in a different order, dependent upon the player.