Just read "Will of the Many" by James Islington. It was fantastic. Kind of an adult Harry Potter meets Game of Thrones but the world is more Roman influenced.

Basically an empire conquers the whole continent and they have a heirarchy system where 8 people give their will/strength/life force to those above. The people at higher levels have so much will coming in that they have telepathic abilities as well. Those at the bottom are half as stong as normal. Its a very interesting magic system.

Plot wise lots of twists and turns. Betrayals and redemptions, political backstabbing and plenty of mysteries to uncover.

I had a few gripes with the boy saviour trope and the lead character Vis being good at everything but not enough to kill an otherwise excellent story.

I don't want to say anymore than that for fear of ruining it.

The sequel "Strength of the Few" just came out. I'm holding off reading it though because i know I'll inhale it.