Shining Trapezohedron (Major Artifact)

Aura strong conjuration; CL 20th; Slot none; Weight 50 lbs.


Through the shining surfaces of this massive crystal trapezohedron, one can see through all time and space.

For every 4 rounds the user looks into the Shining Trapezohendron, the user can cast a divination spell (90% accuracy). Every 4 rounds that the user stares into the crystal, the user must succeed at a DC 15 Will saving throw or become shaken for 1 hour. Note, multiple shaken effects are cumulative, so if the user is already shaken and fails a save, that user becomes frightened. If the save fails by 10 or more or the result is a natural 1, the user gains an insanity.

If the user watches for 5 minutes straight, the Shining Trapezohendron summons the Haunter (an avatar form of Nyarlathotep). The Haunter is not under the user’s control.


To destroy the Shining Trapezohedron, it must be bathed in the heart blood of the Hunter, at which point it dulls, loses its magical properties, and can be shattered.

Section 15: Copyright Notice

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

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