He Who Must Not Be Named

9th-level evocation (formula)

Casting Time: 5 rounds (5 phases of 1 round and fails automatically if interrupted when cast as a formula)

Range: Special

Components: V, T (when Carcosa’s star system is above the horizon, such as mid-Spring to mid-Fall on Earth’s northern hemisphere)

Formula Ability Checks: Intelligence with navigator’s tools or Wisdom (Yog-Sothothery) DC 25, Intelligence with navigator’s tools or Wisdom (Yog-Sothothery) DC 25, Intelligence with navigator’s tools or Wisdom (Yog-Sothothery) DC 25

Formula Backlash: 12d4 psychic damage

Formula Failure: Second-degree insanity

Duration: Instantaneous

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, but it can only succeed if the caster understands the significance of the action and knows the precise relative location of Hastur’s dim star. Upon completion of the spell, roll d%. If the result is less than or equal to your character level (or challenge rating), the magic sends a message instantaneously across interstellar space to draw Hastur’s attention.

The message only arrives if Hastur can draw a line of sight to you, no matter how unthinkably distant. If the message arrives, Hastur’s attention is drawn to you and Hastur’s Elder Influence arrives at stage 1 centered on the caster. The caster must then draw others’ attention to Hastur in order to make them observers and subject to his presence and abilities.