I currently recruited a Asari Justicar to my team in Mass Effect 3. From the amount of game that I have seen him playing, I think that he is an awesome team mate and is worth to keep for a long time. I viewed his upgrade options to see ‘Biotic Sphere’ as one of his powers. Can some tell me what it does and what its upgrades are? I have seen many other players online using its powers but never seen Biotic Sphere that is why I need help deciding if I should upgrade it or not.