Try Hero System. It has a ton of flexibility for magic and has the same skill system you see in GURPS and D&D 3RD Ed. Monte Cook, the primary behind D&D 3RD Ed. used to edit Hero. And I think it's a great idea. A tool I've used for online games is Open RPG, which might work for what you're describing for gaming sessions. >I have not decided what game system to go with >yet: the sorcery is kinda giving me fits, so I'm trying to come up with >something that allows for the incredible flexibility yet also deals with the >limitations. In fact, if it ever happens, it's entirely possible I may use >components from different systems....White Wolf's magic system might work >here, whereas a D&D or GURPS system would work for the other aspects of the >game.