in the game, town of Salem the mafia has 2 killers the mafioso and the godfather and because of this the town roles such as jailor and escort may not be able to prevent the killers from attacking.
this is where the black roses biggest weakness comes from because the
Assassin is the only killer and because the 3 blue dragons that are able to block them only needs to block him once and the black rose won’t be able to kill anymore.
you could counter this by saying the Nightshade power could kill even if he is blocked but if that happens the person who died could write when they died they yesterdays they died from poison effectively making it more likely for the blue dragon to keep blocking the assassin while they find the other members
my 1st idea to solve this is by making it when you are affected by nightshade you are unable to write in your will
the 2nd one is if you are role blocked instead of doing nothing if you have a use of nightshade you will use the nightshade to kill your chosen target. this makes it very important to use your nightshade sparely because normally what you could do is just use the nightshade then get some other than use it the following day but with this, you should only use the nightshade when needed