@"Winfinity has been suggested Winmillions of times already": Great, find me a thread with reasons why this specific Winfinity won't work, and I'll send this to the graveyard for the zombies to read. I haven't checked, since there are so many threads, but I somewhat doubt anyone will have thought of this.
BAHAHAHAHAHHAHAHA!
When I first read "Winfinity," the five star Winmillion idea popped into my head already. But, I think you might have a nice idea here, but the purpose of Spur is gun-sword. That's why(I think) it stopped at four star, because it would hit Max then and the gun-sword purpose will still be put in.
In any way, +0.5