The Chamber of the Vengeful is a Global exclusive feature on Final Fantasy Brave Exvius and features a new series of Trial. It was announced on a live stream for the game's 3rd anniversary on 29th of July of 2019.
Gameplay
The new chamber features strengthened Bosses similarly to the Chamber of the Indignant, but reserved to Bosses exclusive to the Global Version. This can include Bosses from previous events as well.
Like the Chamber of Arms, this chamber encourages the player to use as many different units as possible, with more rewards given the more diverse the party.