Use 5 Skill Mastery Book 20 but all fail in 1 day, in the description there writing there are 70% of success Chances, but since try for 5 times for all different skill books, all are fail, is this consider a bugs? or im really that unlucky? Use 5 Skill Mastery Book 20 but all fail in 1 day, in the description there writing there are 70% of success Chances, but since try for 5 times for all different skill books, all are fail, is this consider a bugs? or im really that unlucky?