This item has been deleted from the data source, but is kept here for reference.
Hidden Between Realities
The note that Petra translated for you is addressed to a "daughter of Light," and it indicates that there is a stolen Rocket Launcher hidden somewhere in the labyrinthine Prison of Elders. To identify its location, the note indicates that you'll need a map that has been squirreled away somewhere in the Ascendant Plane.
Complete one of Petra's weekly Ascendant challenge bounties in the Dreaming City.