I love this ability from Killingham. The nightmares monsters are cool, this gives me the vibe of "where the wild things are" book.
The knights are really giving medieval mythology vibe with their powers. They give that "demonic/monstrosity" vibe you could find in some art works and stories, this reminds me of some tales and art works, also reminds me of Hym demon from the Witcher 3.
I am gonna call it, I think that Sommers ability will be similar to that of a character in a novel called Rokka no yuusha, the ability to control "Love". Basically the ability to manipulate someone else's feelings of love. This would also explain why Killingham in his presentation is sleeping while we see gunko blushing, also now he is talking about love, these things are not random and remember this theory of mine because I am now very sure this will be the case.
Ora didn't do this randomly.
Also, I just noticed how Shamrock not wanting to dirt his hands with Loki reminds be of Dante zogratis from black clover around chapter 244.
I hope the knights will represent capital sins and the dark triad.