He Who Must Not Be Named

School evocation; Level 9


Casting Time 1 round
Components V
Skill Checks Knowledge (geography) or Profession (Yog-Sothothery philosopher) DC 34, 1 success
Range personal and unlimited
Targets you and Hastur
Duration instantaneous
Saving Throw none; Spell Resistance no


This insidious ritual to draw Hastur’s attention is a simple and often rapid repetition of Hastur’s name.

Due to its simplicity, it requires only 1 hour of study to learn and takes almost no time to perform, but it can only succeed if the caster understands the significance of the action. Upon completion of the ritual, there is a percent chance equal to the caster’s ranks in Knowledge (geography) or Profession (Yog-Sothothery philosopher) that the magic sends a message instantaneously across interstellar space to draw Hastur’s attention. The message can only arrive if Hastur could conceivably draw a line of sight to the caster, no matter how unthinkably distant (generally, when Carcosa’s star is above the horizon). If the message arrives, Hastur’s attention is drawn to the person saying his name and Hastur acts as if at Influence Stage 1 for the caster. The caster must then draw others’ attention to Hastur in order to make them observers and subject to his presence and abilities.

Section 15: Copyright Notice

Sandy Petersen’s Cthulhu Mythos, © 2017, Petersen Games; Authors: Sandy Petersen, Arthur Petersen, Ian Starcher.

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