Originally Posted by Pyromancer999
This is a good idea. Still, I'd probably make the Check be 10 or 11 + 2x the total number of spells to be woven, and allow the Spell Weaver's spellcasting score modifier to be added to it. This would make sure that Int-based Spell Weavers didn't have any special advantages.
Glad I could be of assistance.
It's a relatively flexible concept and you can pretty easily configure to how please. And how exactly you go about this will, as previously mentioned, affect how it is utilized.
You may also want to state that the spell lists available to your are only ones that encompass 0 through 9th level spells. An Assassin Spellweaver would be interesting, but wouldn't make much sense.