Undead Gypsies are one of the strongest undead. They are the tougher versions of Undead Witchdoctors. They use a Voodoo Doll. Throwing knifes are good against them because they will break attunement. Gypsys levels range from level 25-30. They shouldn't be fought until your level 26 and up. And even then you should be careful until you're level 30 and up. Two bosses: General Hex and Undead Timothy Dartan.