Magus Shift--Tarot--The Magician [Half-Blood Series Book 1]
Isobel Marlin is one of the most powerful mages ever born. She has been trained by her father and mother using any and all magical races to supplement her education. For the first time in her life Isobel is on the High Council's radar. She has been targeted and marked for acquisition. Her boss has decided to add her to his collection. James Sterling is a warlock of the highest order, and comes from a good family. He has wanted Isobel from the first moment that she came to work for him. Learning that she is a mage is icing on the cake, so he does what any man would do. He throws pixie dust on her and drags her before the council. That is when things get weird.