“it was all a dream” twist: boring cop-out
“it was all a coma/dying dream” twist: boring cop-out with extra Edge
“it was all a drug induced hallucination” twist: boring cop out with extra edge and bad understanding of how drugs work
“it was all a dream of a mental patient in an asylum” twist: bboring cop-out with extra Ableism.
“it was all a dream of a sentient evil pizza” twist: Adventures of Jimmy Neutron: Boy Genius season 1, episode 30
“it was all a dream because this guy literally rewrites reality in his sleep” twist: ursula le guin has never been anywhere near the vicinity of fucking around