I was also considering a defense-killing ability for the city, but I'm not sure if it should be a neutral defense or a unique ability, and whether it's even necessary.
The Paladin is already strong, although I might change the temptation ability. I might also remove some of his votes.
Regarding petrification, the main question was whether it wears off after the Medusa dies or not.
I was also thinking about limiting the Orc's defense or making it visible only when it successfully defends, making it obvious, otherwise it could endlessly defend the Medusa, which would kill without leaving any clues. Initially, I was thinking of making all mafia defenses visible without nicknames in all cases.