We actually have two magic systems: one for the BostonSetting and one for the CamrishSetting.  [Boston] uses the new IntuitiveMagic mechanic.  [Camrish] uses the ThreadWeavingMagic mechanic.

Please feel free to pull spells out of GURPS Magic, GURPS Grimoire, Earthdawn, Earthdawn Companion, Earthdawn Magic: A Manual of Mystic Secrets.  If you want spells out of the CodexArcanum, please let me know.

I'm starting work on a SpellDesign system; please don't expect it to work in-game, but go ahead and try to break it.

Players may note that occasionally there are deviations from these systems in special cases.  
Don't assume you understand another's magic or mechanic.

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Boston used to use the RitualPsychicMagic mechanic, but doesn't any more, having switched to IntuitiveMagic.

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Many of the spells from G:Magic, Earthdawn, or Shadowrun have been adapted for use in our game and are listed at CustomSpells.