Best character exclamations: a la “Ix’s tits!”

Give me the best ones you’ve found pleeeeease?

I’m TRYING to think of a way to say “WTF” (in its whole, extended form) that’s a bookish reference - like specific to our genre, and I’VE READ SO MANY - but literally all my brain is giving me right now is “Ix’s tits!” and I need more options.

THANKS ILY 🫶

(“Merlin’s beard!” is also skittering around butttttt that’s not really what I’m going for, ykwim)