Gods’ Battleground by Ella Summers

The final battle for the fate of the universe is about to begin.

Leda Pandora joined the Legion of Angels to level up her magic and gain the powers she needed to save her brother. Five years later, she’s gearing up to save her family one more time.
Leda’s sister Bella has fallen victim to a powerful curse that’s robbed her of her free will and transformed her into a deity-killing weapon. To save her sister, Leda journeys into the Veil, an ancient, long-forgotten territory now ruled by warlords and pirates.
But what begins as a hunt for the cure to Bella’s curse soon unearths a consortium of old enemies that refuse to stay buried—and escalates into a battle for the fate of the whole universe.