Key of Terror (Diablo III)

The Key of Terror was a miscellaneous crafting material in Diablo III, it could be combined with other keys to create a machine of infernal power.

They have an Item Level of 63 and require a character level of 1. They can be stacked up to a maximum of 100.

"Could this key really allow its bearer access to a plane of unholy terror? Perhaps if its missing counterparts were found..."

Acquisition
The Key of Terror dropped from Xah'Rith the Keywarden at Stonefort in Act III on Torment I or higher difficulty at level 60-69. It is account bound.

As of patch 2.3, it no longer drops. Existing Keys automatically become Infernal Machines.