My take on crytals is to treat them similiar to spirits. Each would have a "might" stat that can be used to increase AP's in a magical contest, i.e. one in which the character has a magical ability that would be used in. I can certainly see alternate variations, such as using it as an augmentation (although it would be hard to see it "failing" and giving a negative modifier).
Truestone seems like it would normally store feats, ala the Issaries secret.
Opinions? Alternate tacts?
David A. Blizzard
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