Theros: Godsend, Part I

Theros: Godsend, Part I is an e-book that tells the official story of the Theros block. It was written by Jenna Helland and was published on April 1, 2014.

Blurb
On Theros, Elspeth hopes the gods will keep her safe from the evils of the Multiverse. But the powerful planeswalker comes to the attention of the sun god, Heliod, who believes she is destined to be his champion. As the gods quarrel with each other, Elspeth must face a massive hydra that was unleashed from the realm of the gods.