The Cursed/Fateful Aura skill Grim Craft does not appear to do anything. My Cursed is level 17, and I have yet to see any of the body armour boosts since getting it at level 12. I highly doubt that my luck or observations were that bad (but it could be).
EDIT: still nothing through level 20, (dead now).
[b31] Grim Craft
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