Who do you think will get the kill on... (Luna III spoilers)

...Il Dottore?

With so many factions now gunning for him, and how he seems to have pissed off Celestia (or at least the Shades) with his Moon Marrow stunt, I highly doubt he's going to live through Luna IV's story. Frankly, he's got it coming after everything he's done.

But who do you think will land the killing blow on him? I doubt it'll be the Traveler (given he whupped their ass), and while Arlecchino seems like a logical choice, I can think of a few other options.

1. The Tsaritsa. Picture this: Dottore narrowly escapes with his life, but finds himself in the snowy wastelands of Snezhnaya after using a portal. As he plots to continue his work, the weather suddenly turns to an icy cold worse than what you get on Dragonspine. Dottore turns to see the Tsaritsa has personally come to see him, and she is pissed. The Tsaritsa then summons an icy prison around him, freezing the Doctor solid before shattering him into a million pieces.
2. Rhinedottir. Given Dottore pissed off Alice and how he's trying to break the laws of Teyvat, Rhinedottir (or rather Naberius) takes issue with that and comes to kill him. However, being the Ruler of Life, her form of "death" involves Dottore being forcibly reincarnated, a process that effectively eliminates him from play, but doesn't actually "kill" him.
3. Pierro. After getting what he wanted from the Doctor, Pierro gives him a "you have outlived your usefulness" speech and kills the Doctor using his Khaenri'an magic.

Maybe someone else will get the kill, but those are some possibilities I've come up with.