From publisher blurb: Undefeatable is the new supplement line for fans of The Pathfinder Roleplaying Game who are looking to add more interesting a different feats to their gaming sessions. Undefeatable 23 which focuses on Ninja has 30 feats including Ethereal Weakness, From The Darkness, Injected Poison, Magical Trickery, Mirror Duel and Telekinetic Trickery that are perfect to be used in any game setting. This 5 page PDF is just the sort of thing needed for GMs to add depth to any great Pathfinder Roleplaying Game gaming session.