Unseen Motion: 1% Difficult to Hit per 10% over 100%.
Joufu's Arc: 1% more attack per 3% over 100%. Rolls over to the second attack once the first one hits 100% I think. Give it some +Dexterity at least? Even +1 per 5% over 100% might actually make a difference(in a world where other people regularly run around with +60 to single stats, or +30 each to multiple stats on single buffs).