A Sudden Wild Magic

A novel by Diana Wynne Jones. A team of mages finds it necessary to invade an alternate universe.

Tropes include:


 * Baby Talk: Marcus, Zillah's son. Rather well educated and smart even though his words hardly make sense to anyone but Zillah.
 * Blithe Spirit: All of the women who go to Arth.
 * Elseworld: Earth, Arth, and Petarchy. They even have alternate people called Analogues.
 * Everything's Better With Ether Monkeys: Jimbo
 * Henpecked Husband: Mark tends to question from time to time why he married Paulie.
 * I Choose to Stay:
 * The Infiltration: What drives the plot; realizing that another world has been forcing Earth into war after war to force them to build new technology and copy it, Gladys sends a team of highly trained female mages (as well as Zillah, by accident) to the other world and stop them.
 * The Load: Roz tends to see Zillah as this.
 * Male Gaze: A world filled with male mages suddenly seeing women in their world that are just dying to get attention (as ulterior motive)? Pretty obvious.
 * Moe: Zillah
 * The Mole: Brother Tony is assigned to spy on Paulie and return information to Arth.
 * Never the Selves Shall Meet: When they enter the alternate universe, all the ones with counterparts there instantly die.
 * Shrinking Violet: Zillah again.
 * Sex Is Evil: In-universe. It's not allowed in Arth because it will upset the balance.
 * Eccentric Mentor: Gladys
 * Tomato in The Mirror:
 * Wild Magic: