The Lights of the Stones — Meyari McFarland

Six hours of training, riding, helping build a wall around Countess Delaney's fortress and now Akuchi had to go to a party. He'd been on battle fields that felt less like a trap than this room did. Until he realized that this was a true trap, that magic had sealed them all in. With everyone else caught in the spell, Akuchi was the only one who could decipher the riddle of the lights of the stones.