Song of the Ninja

 
2
The janitor is too busy working, but the ninja certainly has the patience to appreciate the art of song–and he won't hesitate to use it against the town...
about 10 years
Flipping too townsided... Making a 3 maf variant
about 10 years
https://epicmafia.com/setup/1113643 if for some reason you are looking at this setup