Check out the patch notes for the v20 Lovely Update here: http://maplestory2.nexon.net/en/news/article/55909/lovely-update-v20

Knight - Shield Mastery

QuindinQuindin
MapleStory 2 Rep: 530
Posts: 15
Member
edited 7:46PM July 21, 2018 in Bug Reporting
Shield Mastery (passive) - Perfect Guard chance is not summing in Stat Sheet