Planet of the Sorcerers
From Lexicanum
The Planet of the Sorcerers is the current homeworld to the Thousand Sons Chaos Space Marine Legion. It is a Daemon World located deep in the Eye of Terror.
With the fall of Prospero, Magnus the Red used his sorcerous powers to transfer his City of Light through the warp to a new planet. This planet is now a Daemon World of Magnus the Red; dark, rocky, volcanic and in constant turmoil. Its skies are storms of warp energy. Towers thrust up from rocks jutting from lava plains, twisted mockeries of what the City of Light once was. Dwarfing all other towers is Magnus's own tower, an obsidian monolith called the Tower of the Cyclops. The great, glowing eye of the Tower watches over the planet, its gaze, as well, penetrating the warp into the material galaxy. This allows Magnus to sense the arcane artifacts and gifted psykers which fascinate him, so that he can despatch his Thousand Sons to raid the Imperium.
The towers themselves are actually spacefaring fortresses, which mighty sorcerers of the Thousand Sons use to set out on in raids against the Imperium.
