War Heart - The Five Furies, #1

Envy can slay even the mightiest heroes. Kilek dreams of becoming a hero. Which is why when a goddess calls him and his friends to adventure far from their sleepy village, he's ecstatic. But when his friends are transformed into adults with weapons, magic and more, Kilek gets nothing-except a divine mission and bitter odds. A hoard of giant insects and the agents of rival gods threaten the land, and it's his mission to resurrect the dragons that can defeat them.
Feeling cheated and adrift, Kilek does his best to be useful. But as his friends repeatedly risk themselves to save him, he slips further into bitterness. Can Kilek push past his envy and become a hero without the goddess' gifts, or will his failures doom them all? War Heart is the first exciting fantasy novel in the Five Furies series. If you love epic quests, impossible odds, and underdog heroes, dive into War Heart!