Leoric's Regret

Leoric's Regret is a miscellaneous Legendary crafting material in Diablo III and can be combined with other demonic body parts to create a ring or amulet of incredible power. It can be stacked up to a maximum of 5000 and is account bound.

Acquisition
Leoric's Regret drops from Uber or Maghda in the Realm of Discord after using the Infernal Machine of Regret at level 70. The same amount drops for every member of the party.