Golden Gorget of Leoric
After earning a massacre bonus you land a critical hit or a zone damage, 4 - 6 5 Skeletons counting as minions are summoned to fight by your side for 10 seconds. Max 10 active Skeletons.
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Available as an Emanate item.
All classes can benefit of the skeletons tanks distracting monsters.
But of course, the new Bones of Rathma benefits the most.