One of the only classes where there is an argument for selecting either of the Night Abilities - Court Wizard has a selection of abilities that are extremely useful when usable by evils.
First off, Arcane Empower allows Assassin to bypass not only passive death immunity, but given death immunity as well, such as from Good King’s Guard or Hunter’s Bear. This could also allow an Alcoholic/Plaguebearer/Poacher/Sage/Servant/Wench to bypass occupation and redirection immunity for two nights - which is precisely what was trying to be avoided when removing half of Sellsword’s passive.
Second is Magical Barrier. Though this choice could be seen as worse than Ice Ward, it has infinite charges, which means it can be useful throughout the entire game. I am still waiting for confirmation on what specifically counts as a negative effect, but assuming I’m right, this would allow an Assassin or convert to be redirection and occupation immune for as long as you exist. Jeez.
Last but not least comes Ice Ward. Who needs an Enforcer when you, the Mastermind, can prevent all visits to your fellow Unseen member? You can also block heals on bleeds with this.
Tavernkeeper has a kit that is extremely useful for Unseen - especially after discovering the Prince, or after they are outted. Being able to day-occupy the Prince is extremely powerful. Along with this, you can pull infinite ToL-Rit swaps (FoL Invoker), by swapping an important Blue Dragon with someone else, and attacking that someone else, thus getting an almost confirmed kill on said Blue Dragon.
Being able to Inoculate and chainheal your assassin is very good. Perhaps not as powerful as extra killpower or aiding your assassin’s kills, but it is still a very strong combination.
These are the three classes I believe MM will choose from