The Giant Glaive weapon is almost as tall as the user Godric Fuma standing at around 6ft when having the pommel against the ground made completely of Fuma black steel. The blades width is overall 2ft so it has a large and deep cut or slash range. The back edge has indents or "teeth" that can cut and maim if the attacking side is flipped during combat. Has small guard at the bottom of the blade ending with blaze sized lateral openings. Besides that nothing special.
When a Fuma is first taught the tradition of making black steel they are also required to make their first weapon and this was Godric's choice at the time and through the years he just stuck with it.