[quote] It culminated to the center of the ceiling where a large Psion was being fed this black oil, straight to its brain. It hung there dormant. [/quote] [quote]Shooting it will activate its shield and begin the encounter, detaching the walls from the floor and leaving your fireteam into a large floating platform. Falling would be certain death. When the encounter begins Cabal jump up onto the floating platform trying to stop you and your team[/quote] Sounds [b]alot[/b] like the Human Reaper encounter from Mass Effect 2