I recently found the level 12 plan for The Infernal Machine in Reaper of Souls. Where do I find the components to make one of them?

It requires the following keys to craft:

  • Key of Bones
  • Key of Gluttony
  • Key of War
  • Key of Evil

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2 Answers 2


You need to be level 70 and in a game on difficulty Torment 1 or higher. The keywarden spawns in adventuremode aswell.

This are the new Keys in RoS:

  • Key of Bones - Act I, Fields of Misery
  • Key of Gluttony - Act II, Dahlgur Oasis
  • Key of War - Act III, Stonefort
  • Key of Evil - Act IV, Silver Spire Level 1

Sidenote: If you do not all ready have the infernal machine plans, the first keywarden you kill will drop the plans and still has a chance to drop a key.


According to this and this pages, the keys are still being dropped by Keywardens as in pre-2.0 patches.

The only 2 differences is that:

  • now you also need to farm Nekarat in Act IV for the key
  • Keywardens now have chance of dropping a key of other keywardens(my interpretation: all Keywardens drop all keys)

These keys only drop at level 70. Before that you will probably get "normal"(old) keys.

  • I will note that I got the plan from the key warden in act 2 in torment 1. So the first source seems wrong on where you can get the machine plans.
    – Rapida
    Commented Mar 29, 2014 at 1:14
  • 1
    Machine plan drops instead of your first key from any of the keywardens. Once you have taught it to your blacksmith they only drop keys.
    – Elise
    Commented Apr 12, 2014 at 0:33

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