Key of Destruction (Diablo III)

The Key of Destruction 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.

"The metal used to forge this warped and twisted key bears the mark of Baal’s realm, but its contours suggest it is not complete."

Acquisition
The Key of Destruction used to drop from Odeg the Keywarden at the Fields of Misery in Act I 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.