Idol of Terror 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 stacked up to a maximum of 5000, and is account bound.
Idol of Terror drops from Uber Zoltun Kulle and Uber Siegebreaker in the Realm of Turmoil after using the Infernal Machine of Terror at level 70. Same amount drops for every member of the party.
Regular Salvaged and Dropped Materials