Asorah's Dreaded Gateway Key is the second Gateway Key and requires the defeat of Asorah, The Fallen and obtaining a Dreadlands Infused Powerstone in order to craft. It can only be used within The Abyssal Wasteland and The Dreadlands.
Materials used to craft Asorah's Dreaded Gateway Key is:
Right clicking the ground while holding the key will create a portal. They key will not work outside the Abyssal Wasteland or Dreadlands and an error message will instead appear pointing out that it isn't working.
- The Gate Key also seems to work in Omothol as well if you happen to still have one at this point.