What are the best magical systems in GURPS?

[hal]

Originally Posted by kirbwarrior

I wing this kind of thing all the time, I'm not sure what problem you're talking about.

Tell you what - quick, whip up a reasonable NPC mage using the magic system of choice, with all the spells ready to roll for interactions with the player characters.

You decide the parameters of the NPC so this is fair to you. If you want, open up a new thread. Maybe the example you give me will inspire me to use it in my upcoming SECRETS OF NEW ORLEANS Fantasy Grounds campaign set in 1920, but with the Call of Cthulhu material excised out and a different horror campaign put in its place (If you know Eden Studios WITCHCRAFT game system, it will be the Combine vs all mages and all other monsters, with the mages usually avoiding the monsters etc). Set in 1920's - the player character is unaware of what magic is out there.

So, go to town with your spur of the moment mage using the magic system of choice. ;)