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 "" designed by Michael Moorcock.

This item is included in the items percentage displayed at the end of each level in Heretic.

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.

Trivia
The Chaos Device remained a recurring element throughout the entire series, reappearing unchanged in Hexen II, while in  its appearance and behavior remained similar although there it was simply called a teleport spell, powered by blue mana.

Appearance statistics
In the Heretic IWADs the chaos device is first encountered on these maps per skill level:

The Heretic IWADs contain the following numbers of chaos devices per skill level:

In the Hexen IWADs the chaos device is first encountered on these maps per skill level:

The Hexen IWADs contain the following numbers of chaos devices per skill level: