1) When Jacob Bobrowski defends someone, does he lose a portion of his defense permanently, or only for one night?
2) Do demons summoned by a necromancer live and remain active as long as the necromancer is alive?
3) Does the Deathbringer provide an additional clue himself, or is it given by the GM?
4) What happens to the serial killer's karma if their Night Action fails for some reason (due to a block, for example) or is unsuccessful (e.g., the murder fails due to defense)?
5) If the karma goes beyond the permissible limits, does the serial killer die immediately or at the end of the night? For example, can they commit a murder in the first night (karma becomes -4), and then perform an Uplift (karma returns to -1)?
2) As long as the Necromancer is alive.
3) By the GM. It's simply 2 clues per murder.
4) "Karma is a collective concept that includes not only actions but also thoughts. To work through one's own karma, one should not allow negative actions or negative thoughts. Any thought is as material as an action. A person who, at first glance, does not commit negative actions and does not harm others can significantly burden their karma with negative thoughts..."
In short, karma is affected by the declaration of the Night Action, regardless of its success.
5) Karma is calculated at the end of the night. Yes, they can commit a murder and then perform an Uplift, but they will remain at -1 with the corresponding debuffs.