re: perigator

Another detail is that Doc Scratch's gun (which is also the same gun used by Calliope) also has mini Cue balls as it's ammunition. Hussie attempting to shoot Lord English using that gun implies that it would also be effective against LE, but it didn't work because the gun only had one bullet(which was used to kill Snowman) and so it was empty. This also means Calliope's weapon is one of the few weakness against LE. Another thing is that the cue ball in the Judgement Clock breaks at the same time Doc Scratch's head breaks. And also that same clock has cherub imagery on it, along with using the exact same type of Time magic that is part of Cherub's biology (as seen when Cherubs mate, and also with LE)

I theorize that the magic is related to Relevancy and/or Canonicity. Remember how LE's poison causes John to slightly be erased from existence and loose narrative relevancy? Yeah.

Also the 3 characters that uses the Cue Ball are all Light Players (Vriska, Mindfang and Rose).