Heroes of Avangard: The Lost Key Saga

Five young Chosen Ones must fulfill the trials of the Lost Key Prophecy and recover the mysterious artifact that vanished during the CL War. With the Mythicals reduced to wandering souls and unable to intervene, the fate of their universe rests entirely on their journey. But the Lost Key is more than a missing artifact, it may be the only thing standing between existence and Kakiamis, a banished and weakened god lost beyond the fabric of reality. He's now ready to find the Lost Key after it’s creation to become one with the universe and drown it in shadow.