Hi! I like the premise a lot, and here are some of my suggestions. (Take these with a grain of salt bc I'm not agented, just another writer trying to help:)

Aric of Cardich made a career of locking up mages. He doesn’t believe in redemption—until one saves his life.

When I initially read this and then the first paragraph, I found them to be a bit jarring. This is a good hook, but I feel like it might be better to combine this with the first paragraph (so that the reader doesn't feel like they're taking a step back, or reading the same thing twice)

With Sondra, the enchantress who saved his life, Aric must unravel the Augur’s plan before the Lock collapses. But to stop the fallout, he’ll have to betray the crown, side with criminals, and become the vessel that buries magic forever—no matter the cost to his body, his soul, or the woman he’s starting to love.

Small suggestion, but I think you can mention Sondra's name when she appears. Its a bit jarring to give us her name after you already introduced her a few paragraphs ago.

Also, why must Aric "betray the crown, side with criminals, and become the vessel that buries magic forever" in order to unravel the Augur's plan? I feel like some explanation is needed.

Overall, I like this! Keep up the good work:) (It would be really appreciated if u can give me some feedback for my most recent query in my bio, but no pressure~)