Broken Swords! (Help)

So, whenver I equip my swords, and attack either a npc or a player, my swords do no dmg to them what so ever. Any suggestions on how to fix this? If your wondering; Yes I have changed multiple swords, and they still do the same thing. But when I try, swords like sanduster, or frenzies, they work perfectly. The swords that don't work for me is, Councils, LastWish, shade, Divine, and Auqabursts.