So the premise is simple. The Mafia has 1 "Master Plan" they can use throughout the entire game. If it fails, it fails. Here's how it works.
The Mafia starts with 1 Master plan. Once it's used, regardless of who used it, it's gone. The Mafia is told at the beginning of every night if they have their plan or not.
If there is a Godfather alive, he may choose to preform the Master Plan whenever he chooses.
If there is a Mafioso alive and no Godfather, he may choose to preform the Master Plan whenever he chooses.
Godfathers/Mafiosos can preform the master plan by selecting themself, then another target at night. Trackers/LOs/Spys will not see them target themself.
When the Godfather/Mafioso uses the Master Plan, the attack they deal on the same night will be a Basic Astral attack. It will not be registered by LO, Spy, BG, Tracker, Trapper, or Crus.
For technical purposes, the Mafioso is the one who always preforms the attack. If he is roleblocked/jailed, the Godfather will carry out the plan. If they both are stopped, the plan is not used, and can be used again. Hitting an immune target does not count as failing.
This is basically a rework of the current idea of the "ninja attack" that the devs thought about giving to the Mafioso. I wanted it to make it so that, regardless of who was alive, the Mafia would be able to use their ninja attack (say a SK killed the Mafioso N1. now Mafia can't use the ninja attack). Also the name is up for change if someone comes up with something better.