In GURPS Cabal, magic is controlled by the thirty-six decans of the astrological zodiac. Each decan has its own sphere of influence and personality. You might have two or more decans of knowledge say, where one reveals hidden information and secrets, and another focuses on the destruction or creation of knowledge. The turning of the zodiac and its symbolic elements -- gold, an effigy of a ram, etc. -- affect the efficacy of each decans magic. If the house opposing the spell you want to cast is rising, you're going to have a hard time casting it. Mage: The Ascension, on the other hand, has a less finely-grained division of magic, having nine spheres of influence like Life, Matter and Time.
So, I just thought, why not mash the two together? Nine goes into thirty-six evenly four times, so each sphere could have four decans. Each decan represents a different application: creation, destruction, alteration and sensing, maybe.
I'll have to let that percolate in the back of my brain.
Tags: GURPS Cabal Mage The Ascension
