Hermetic Astrology on other planets

[malloyd]

Originally Posted by Anders

I'd count being on Mars as giving +1 on 'Martian' spells and -1 on 'Venusian' elements. Not go overly complicated.

Alternately perhaps all mortal magic depends on being in the terrestrial realm where there is a mixture of the classical elements (or decanic influences or whatever), and as soon as you leave the sphere of fire and enter the ether of the celestial realm, it all fails. Everything in the Heavens is deterministic and set by God. You simply can't cast spells on Mars (or anywhere outside the innermost edge of the lunar orbit). At least not without Divine Intervention, in which case they do whatever God wants them too.

Edit: for that matter, everything being deterministic, maybe you can't even [want] to cast spells in the Celestial Realms. If the motion of the heavens are entirely controlled by God and themselves forecast everything, you may no longer possess free will should you enter them, lest your actions somehow alter the future by changing said motions.