Storm, Shadow, and Current. Yucaipa's War, #4

When Zach thought his biggest problem was surviving magical training, he was very, very wrong. War is coming. Shadow Elves stalk the forests. Ancient enemies stir in the mountains. Kingdoms teeter on the edge of collapse. And somewhere in the middle of it all is thirteen-year-old Zach-a science-minded trainee who would rather solve equations than fight battles. But when an attack shatters everything, Zach and a group of unlikely young heroes are thrown into a desperate fight for survival.
There's Bettsam, the shadow-walking warrior with a chained scythe and too much courage for someone his age. Mia, a fierce young water mage discovering just how powerful she can become. Kaiden, the sharp-eyed marksman who never misses when it matters most. Cady, a determined healer who refuses to leave anyone behind. And a strange Time Mage who seems to know far more than he should. Together they must outwit kings, battle assassins, survive war, and uncover secrets that could change the fate of the kingdom forever.
Because sometimes the future of a kingdom doesn't rest in the hands of kings.It rests in the hands of kids brave enough to stand in the dark. Perfect for readers who love epic middle grade fantasy adventures filled with magic, friendship, danger, and unforgettable heroes.