Emperor Mage (The Immortals, Book 3) by Tamora Pierce
Wildness is a kind of magic
Discover a land of enchantment, legend, and adventure in this third book of The Immortals series, featuring an updated package - perfect for longtime fans and newcomers alike.
Daine Sarrasri's power is growing, and her bond with animals is ever stronger.
Along with her mentor, Numair, and a delegation from Tortall, Daine is sent to the Emperor Mage of Carthak in hopes that she can help to smooth international relations between their lands before discord bubbles over into war - by helping the emperor's ailing birds.
But Carthak's emperor Ozorne is charmingly treacherous, and Carthak itself built on the labour and suffering of slaves. No matter her choices, Daine finds herself at the centre of a terrible crossroads: she cannot turn away from animals in need, but to help this man could place those she loves in the greatest danger and make a mockery of all she values.
All the while, her magic is flourishing, leading her to answers and abilities beyond what she ever could have dreamed ... but also to incredible danger.