Zappo said:
While we're here: where do renegades get their power anyway? Not from the three moons, obviously. Do they get it from another god? Can any god grant arcane magic, if it so desires? Do renegades get power from a non-divine source?
Yes, they do get their magic from the three moons. More accurately, the moons broadcast arcane power to Krynn, which any individual with the natural talent and skill can attempt to master. Wizards don't need to be faithful individuals to use the magic the gods provide, just willing to invest the time and energy to the study and preparation of spells.
What the gods of magic do, and what the Test is the gateway into, is reward dedication and commitment with enhanced power and resources. The phases of the moons only affect those wizards who have passed the Test and survived (and who, in game terms, have taken levels in the Wizard of High Sorcery prestige class). In addition, certain secrets known to the Orders, which are keys to unlock the greater power of the moons, are only available to those wizards who have taken one of the three gods as their divine patron. Thus, the majority of Krynn's wizards (those who are capable of casting 3rd level spells and greater) will usually be Wizards of High Sorcery, not renegades. A renegade will be just a standard wizard, with no additional benefits, whose only real connection to the moons is that which any wizard has to the magic created by them.
And, BTW, how could Raistlin conceivably take on the gods, considering that all nuitari had to do was to withdraw her support before his ascension, leaving the wizard powerless? Did he find another source of arcane magic, a source outside the control of the gods?
Nuitari, who is male in most accounts, probably wasn't all that pleased with what Raistlin was doing. However, Raistlin had amassed a considerable amount of power at that stage, enough that he likely didn't need the additional help Nuitari usually bestows upon his Order. Also, I can't remember exactly how it played out in the alternate reality (it's been ages since I read
Test of the Twins) but I think Nuitari may have been the last one to go, perhaps out of deference.
Regardless, Raistlin's a real exception to almost every rule regarding magic in the setting. Not exactly the benchmark, if you know what I mean.
Cheers,
Cam