Endless Knight: The Arcana Chronicles Book 2 by Kresley Cole
In the second book of the Arcana Chronicles Evie has now fully come into her powers as the tarot Empress. And Jackson was there to see it all. In the aftermath of killing Arthur, the tarot Alchemist, Evie realizes that a war is brewing between the other teens that, following the apocalypse, have been given powers and its kill or be killed. Things get even more complicated when Evie meets Death, the mysterious, sexy Endless Knight. Somehow the Empress and Death share a romantic history - one that Evie can't remember, but Death can't forget. She is drawn to the Endless Knight, but is in love with Jack. Determined to discover why she's been granted these powers, Evie struggles to accept her place in a prophecy that will either save the world, or completely destroy it.