Question: What is the writing principle that suggests that events or characters introduced in threes are more humorous, satisfying, or effective in execution of the story and engaging the reader and is used in a novel featuring Allison Gross, a hideous witch?
Sentence (from "Allison Gross"): One day the Seelie Court came by, and a queen stroked him three times, turning him back into his proper form.
Relevant evidence: Yes