The first three books in the Eddie Lancaster series: Warlock for Hire, Warlock Wanted, and Dark Warlock.
My name is Eddie Lancaster. I've outfought vampires, out planned seers, taken on the fairy kingdom, and even created my own species.
I've been on the run since I was a teenager. I have the unique ability to siphon magic out of anyone and anything. My former mentor wanted me to put my talents to work for her gain. When I refused she murdered my parents. She's been after me ever since.
If you like Jim Butcher, Kevin Hearne, Shayne Silvers, Steve McHugh, Patricia Briggs, Shannon Mayer, or Ben Aaronovitch, you will love the Eddie Lancaster series.