It's not a novel but I am the sorcerer king is a really good manga/manhwa with a magic system that is intricated with real world technology....
Really recommend The Death Mage Who Doesn't Want a Fourth Time.
I'd say Against the Gods if you haven't read it yet. MC kills everyone without reservation.
Having one post means a message like this? I've just registered and I have the same problem.
Separate names with a comma.