The Burning Sea
by Paul Collins & Sean McMullen
Book 1 in The Warlock’s Child
There is no lower rank than cabin boy on the warship Invincible. But Dantar knows he is important, because anyone who threatens his life gets turned into a pile of ashes. His older sister Velza is a shapecasting warrior, in a world where only men fight. Until now.
Together they must solve the mystery of broken magic and escape the dragon.