In the dark universe of Warhammer 40,000, vile Cults of Chaos create these devices.
The circles are used to curry favour and to call the cult's patron Daemons to battle. The summoning circle is an effective and simple piece of terrain to build. You can use it for a special Witch Hunter scenario or as a centerpiece for a themed gaming table to add extra depth to your games.
Click on the images below to see a larger picture of each stage.