Blah blah, introduction goes here.
The Ghostmane Sawblade would be like a winmillion reskin with higher, 5* damage, and would fire saws instead of those winmillion projectiles. It might be capable of doing elemental damage, but I'm not sure whether it should seeing how the Spur line is all normal. I have a special idea for the charge attack - You know how Catalyzer charged bullets spin around the target? This would work in similar fashion, except you would not be able to place more than one saw per enemy (This also counts for your team) and the Saw would spin as fast as Dark Retribution bullets, dealing balanced damage to the monsters around the monster (but not the one the charge has been released upon) per every round it makes. After X amount of rounds, the saw would disappear. It could possibly be a rare drop from actual Ghostmanes. It could also stun or interrupt the victim of the charge.
Ghostmane Menders would be cloaking version of the original menders, and will use the old bullet and attack from beta if in danger. All of the mending options it has take x2 the time it would take for the normal Gremlin mender, and will not be able to use the Darkfang Mender's bubble shield. They also have the walking speed of a normal Ghostmane Stalker, making them harder to catch. And no, these do not carry Sawblades.
So, the charge is a Dark Retribution you can throw . It can work, but it can also become overpowered very easily.
I'd forget about making it interrupt monsters to be safe. Maybe it could interrupt or stun the original target in the center, but don't do that on everything around it.