Throughout the Lands affected by the Gorequake a few sites were preserved by the forces of Tzeentch. They cleverly sabotaged the Khornate Machines, instead glassing the area itself. These Oasis Lands allow Tzeentch Armies to trek the Gorequake lands, and to rest and stock up here
These Oasis Lands are made by Living Glass. This Glass magnifies magic, especially Lore of Tzeentch Spells. The Living Glass enthralls outsiders by presenting to them branching timelines as if they had made different decisions. The Glass would sometimes subsume these mortals and create Glass Protectors out of them
