Harbinger of Doom (Three Book Bundle

This book bundle includes the first three volumes in the acclaimed epic fantasy series, Harbinger of Doom. (The paperback versions total about 680 pages. Mad wizards wrenched open a gateway to hell on Eotrus land. A gateway that's determined to stay open. What is the young knight, Claradon Eotrus, to do when he discovers that the man he recruited to help him close that gateway is either the greatest hero the world has ever known or the devil himself, thrown down from the heavens by the gods in olden days? Is he out to save Midgaard or destroy it? And if he's truly the harbinger of doom, how can Claradon stop him?