Opposing runes and sorcers - and the lunar exception

From: valkoharja <rintasaa_at_6PF-uDLtaL15k2l5Ochp8jR2kbls74D-uI7_5i3c5d59GOu8ISl4FdF0tLBCuAiYWGg>
Date: Thu, 30 Jul 2009 23:43:07 -0000

I understand the reasoning with Gods and spirits (and I suppose saints) not having opposing runes, and I'm fairly comfortable with them being restricted to one element.

But what about individual magicians? There can be cultural reasons limiting theists, and opposing spirits probably wouldn't get along, but does the same apply for the much more inpersonal sorcery?

Say a sorcerer has access to a grimoire of Death magic, and then gains access to another grimoire of Life/Fertility magic. What is it that stops him from learning both?

The case for elements is even more curious, as they are arranged in a circle. Is the sorcerer who has learned fire magic really incapable of learning Earth magic?

Also let's say the sorcerer gains access to the lunar rune. What changes. Does it mean that he/she can now ignore the restrictions entirely?

  -Adept