Chaos Device

Darchala's Chaos Device is an artifact found in both Heretic and Hexen. When used, it sends the player back to the start of the level (or near a portal the player came from in Hexen). It is best used to get out of unpleasant situations. The figure featured on the artifact closely resembles the "symbol of chaos" designed by Michael Moorcock.

Bugs
In version 1.0 of Hexen, the pickup messages for Chaos Device and Disc of Repulsion artifacts are swapped - picking up Chaos Device artifact will display "Disc Of Repulsion" message, and respectively, grabbing Disc of Repulsion item will cause "Chaos Device" message to appear.