Heretic Spellblade
Heretic Spellblade - K D Robertson
The series has three books out (2 on audible, third releasing November 23); all on KU as well. Much more polished and maturely written than the norm.
I highly recommend it.
https://www.amazon.com/dp/B08NCDQFXG/ref=cm_sw_r_cp_apa_zTo2Fb6HA2MF3 ( ._. )