Corypheus's Prison - Riannon's Floor

Riannon's Floor is the fourth floor accessed by Hawke in the Grey Warden prison constructed for Corypheus. It can be accessed only as part of the Legacy DLC and can only be entered from Corypheus's Prison - Tower Base and only if Hawke has sided with Larius instead of Janeka at the end of the Tower Base level.

Background
Hawke continues to battle through Corypheus's prison on this floor. Larius joins Hawke as an ally during this level. It is necessary to make use of the Power Nexuses to control magical barriers throughout the prison. (Note that if you side with Janeka you will instead be taken to Corypheus's Prison - Daneken's Floor and you do not access Riannon's Floor at all).

Walkthrough
The Helmet part of the unique armor set Regalia of Weisshaput is in a chest in a room at the north of the maze.
 * for mage Hawke, this is Cowl of the Silent One.
 * for rogue Hawke, this is (to be confirmed).
 * for warrior Hawke, this is (to be confirmed).

De-activating certain barriers will release demons.

Involvement
(main)

Notable items

 * Codex entry: Helm of Weisshaput
 * for mage Hawke, the Cowl of the Silent One for the Regalia of Weisshaupt armor.
 * for rogue Hawke, the (to be confirmed) for the Regalia of Weisshaupt armor.
 * for warrior Hawke, the to be confirmed) for the Regalia of Weisshaupt armor.