Mara's Kaleidoscope is a legendary amulet in Diablo III. It requires character level 60 to drop. It is one of the five amulets that may make a character completely immune to one damage type: in this case, Poison. With it, Ghom, as well as his Uber variant and Voracity, or any other pure Poison bosses, become the easiest battles in game. In the Helltooth Harness Set Dungeon, it will trivialize the objective to take no Poison damage.