Blizzard has teased a new Co-Op Mission (what used to be known as "Allied Commanders" mode) for StarCraft II: Legacy of the Void. Dubbed "Chain of Ascension," this new challenge will place players on the side of Ji'nara as she engages in a mental battle against a mysterious foe. Failure means this new threat will gain control "of the death fleet from Alarak." I don't know what those words means, but a death fleet sounds cool.