Buy Guns of Icarus Alliance on Steam!
When Jawjee posts part 5 of his story (maybe) (if i'm not feeling lazy) (i'm sorry everyone, i'll try xD)
You need to either have Macmacnick, B'Ellena, or a Jawjee to mrau properly. Without one of these, the mrau will be incomplete. Someone may study and learn "Mrau", but it needs to be taught by the masters above.