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→Find the Keys and Plan
To unlock the Infernal Machine players have to gather 3 keys and a plan from all four acts by killing the Key Wardens. (An even longer and more involved process than Diablo 2′s {{iw|Pandemonium_Event Pandemonium Event}}.)
The Key Wardens always appear in an [[Inferno]] game but it is not guaranteed they will drop what you need.
The Keys and Plan are Bind to Account so you can not trade for them. You can have more than 1 of each key at a time.
==Build the Infernal Machine==
