Set Fire to the Gods by Sara Raasch and Kristen Simmons

Ash is descended from a long line of gladiators, and she knows the brutal nature of war firsthand. But after her mother dies in an arena, she vows to avenge her by overthrowing her fire god, whose temper has stripped her country of its resources. Madoc grew up fighting on the streets to pay his family’s taxes. But he hides a dangerous secret: he doesn’t have the earth god’s powers like his opponents. His elemental gift is something else—something that hasn’t been seen in centuries. When an attempted revenge plot goes dangerously wrong, Ash inadvertently throws the fire and earth gods into a conflict that can… Read more.