Discover what the Cabal were doing on Europa by obtaining and decrypting Vex Memory Fragments. Defeat Vex in Asterion Abyss on Europa to obtain Vex Memory Fragments. Precision final blows have an additional chance to drop a fragment.
During your mission to foil Ixel, the Far-Reaching on Nessus, troubling data pulled from Vex prediction engines foretold a series of futures where Zavala has suffered a final death. Crow believes the Cabal will try to act on these predictions and that Zavala is in danger.