Sheesh, future!Jon doesn't need to KILL past!Jon to try and stop the ritual, just cut out his eyes. (Or maybe he's trying to stop him from speaking? But as someone who took a course on Anatomy And Physiology Of Speech Production, it is Incredibly Difficult to totally mute someone. Impairing their ability to coherently speak, though, totally possible, but that's better done by attacking the tongue.)

nah, can confirm he is absolutely going for the kill, cause. episode 167 told us the archivist’s death frees the assistants. i was trying to think of HOW he would do it and 11 pm brain went uhhhh neck stab