the de facto ruler of the space station Omega, an important hub in the Terminus Systems, and the owner of the Afterlife nightclub; and Samara, a potential companion of Commander Shepard and a member of the Justicars, a class of extrajudicial law enforcement officers and executioners operating almost exclusively within asari territory. Samara's subplot introduces the Ardat-Yakshi into series lore, and involves her hunt for her Ardat-Yakshi daughter Morinth. In the Lair of the Shadow Broker DLC, Liara temporarily joins Shepard as a companion in Illium, where she avoids an attempt on her life by an asari Spectre who is secretly an agent of the Shadow Broker. She assumes the role of the Shadow Broker after locating and killing the incumbent. In Mass Effect 3, Liara reunites with Shepard at a Mars research facility, where she has discovered plans for the Crucible, a Prothean superweapon theorized to be capable of defeating the Reapers. Numerous asari worlds are invaded by the Reapers during the progression of the game's narrative, including Illium and their homeworld of Thessia. The Banshee, altered from asari with the Ardat-Yakshi genetic condition, is introduced as a new enemy type and recurring element of the Reapers' ground forces. Following an unsuccessful incursion in the krogan homeworld of Tuchanka by Reaper forces, the asari councilor (either Tevos should she have survived the events of the first game, or her successor Irissa should she have perished) is saved by Shepard, who is simultaneously gathering information on a concept known as "the Catalyst", from a coup attempt at the Citadel by the human supremacist paramilitary group Cerberus. The asari councilor later provides Shepard with a lead about a classified artifact secretly housed at the Temple of Athame in Thessia, which may have connections to the Catalyst as well as the completion of the Crucible. The artifact is revealed to be a Prothean beacon containing a VI called Vendetta, whereas information discovered in the temple indicated that Athame is in fact a guise crafted by the Protheans, with the implication that they have intervened in asari development during antiquity and may be responsible for the asari's natural ability to develop biotics, a notion emphasized by the Prothean squad mate Javik if he is present. Shepard may also assist Aria T'Loak with retaking Omega station from Cerberus forces in the Omega DLC. In Mass Effect: Andromeda, the asari are one of the Milky