Furyborn (Empirium, #1)

by Claire Legrand

Her right arm held up her sword—her casting—which was now hidden somewhere in Celdaria. Katell’s other hand clutched a fistful of ragged stone feathers. Angels, miniature and pathetic, their faces contorted in agony, crawled up the legs of her white mare, pleading to no avail. Around her head shone a halo of light, plated in gold, kept burnished and flawless. Saint Katell the Magnificent—a sunspinner and, after the Angelic Wars, a queen. The unifier of Celdaria. Loved by an angel but strong enough to resist the temptation of the enemy. And, in the thousand years since, the children of her line had sat on the throne. The other six saints lined the vast hall, three on each side. Gigantic and solemn, stone and bronze, they each carried their own casting and were framed by an element: Saint Nerida, waterworker

I kinda lost the plot with the worldbuilding dump here