I've made this to deal with a specific topic, that of magic in the rpg.
Now, there is precious little that can be, IMO interpreted by the rules regarding magic in the setting. For instance, warging and the like can be done pretty simply. But things like Melisandre does, Thoros, etc are not as simple. Also, there are hints throughout the book of other sorcerous events having taken place, such as Stormsinging/Stormsingers, etc.
Even if Book 5 is released in time for its contents to be digested and added into this rpg, I doubt it will have all the revelations neede to actually make a lgitimate chapter on magic along with neeeded information on rules. (with the possible exception of the faceless men...but even then I doubt it since we wont be seeing much of Arya)
I also think the way GR handled magic in the Black Company rpg, while quite well recieved, does not suit ASOIAF at ALL. ASOIAF IMO requires a codifiedand structured form of magic, that of specific spells and rituals, rather than make it up as you go. For what I precieved, magic was a skill that was taught, in a ritualized and structured way, or handed down from someone, not something someone was born with or bumbled through on their own. For instance, Mirriz Maz Durknew what she was doing right from the moment she met Dany. Her 'curse' was planned very carefully in accordance with the dark knowledge she possessed, and executed through the spell she cast; she did not just make it up at the last moment.
Even minor acts of sorcery, like the illusions and tricks of the faceless men are also taught and trained, in a formal and institutionalized manner.
(Note Warging is something that can probably be classified as something instictive, and not rigid, that a character can somehow be born with rather than learn. So it could be depicted using simplistic rules, such as for the Balck COmpany rpg. Still even then there isa difference between a warg such as Jon, and a highly skilled and powerful warg such as varamyr Six Skins)
In the end, my rambling basically means that I see a dilema in the making here:
On one hand I hope GR will be able to develop magic systems to cover the various types of magic we see, instead of simply making one informal chart type system that can be adjusted willy-nilly on the fly (as in black company),or make something extremely rigid and limiting like GoO did.
But in order to do so, they will really need to have a long chat with Mr. Martin, as the information in the books right now is not sufficient (except maybe for warging). Knowing Martin though, he will not be willing to divulge such technical information, because as quoted before he does not want to state something he may wish to change later in the remaining books.
So what exactly does GR plan to do here, and what do fans think should be the path taken?



