Geomantic Web
From Warhammer - The Old World - Lexicanum
The Geomantic Web is a network of Ley-lines created by the Old Ones to channel magical energy around the world. [1a]
History
World-building engines and great enchantments were powered by the flow of the energy and many Temple-Cities were built on the vital points of convergence. At the heart of these cities, the Slann were able to commune with the Old Ones and shape the world as they wanted. [1a]
When the warp gates collapsed, the web fractured and although the Elf Waystones helped stablise the situation, they also added additional nodes of power that allowed more fractures to break open. When the raw magic escaped it split into different colours much like a white light would disperse into a rainbow via a prism. [1b]
Sources
