Yellow Brick War by Danielle Paige

A teenage heroine returns to a fractured Oz as rival factions prepare for all-out war, forcing her to navigate shifting loyalties, brutal battles and dangerous magic. Caught between a charismatic, authoritarian ruler who claims to protect the land and the rebels who recruited her, she uncovers dark secrets about her mission and the true cost of power. As alliances crumble and personal losses mount, she must make impossible moral choices about who—and what—she is willing to sacrifice to save a world gone wrong.

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