Liber Artefactorum is a magic item supplement for both general True20 and the Nevermore setting, published by Expeditious Retreat Press.
pp. 6-7, Glamered: Light Shaping seems a reasonable (even preferable?) alternate prerequisite.
p. 7, Phasing: Under Prerequisites, "Phasing" should be "Phase".
p. 11, Halflingkind: Attack Specialization should only apply to one weapon.
p. 13, Animated: "Skill bonus" should be "attack bonus".
p. 13, Corrupted, and pp. 14-15, Virtuous: Some guidelines on how to determine which vices and virtues oppose each other would be useful.
p. 16, Intermittent Function: Indent "Dependent".
p. 16, Requirement: 1. Why is the Plane Shift power required for Fee items? 2. Holy water does not appear in the core rules.
pp. 19-20, Intelligent Item Actions: In the 2nd paragraph, both instances of "stain" should be "strain".
p. 20, Dedicated Power: What are the options for dedicated powers? How do they work? The only example in the book is Puck's Pouch of Trick's, p. 36.
p. 25, Winter's Shield: Under Hooks, "winter shields" should be "winter's shields", and "adventures" should be "adventurers".
p. 36, Open Game License: Under "15 Copyright Notice", most of the listed works have been mashed into a single block of text.
Back cover: Under Enhancers, "character" should be either "a character" or "characters".