The Demon Mark by Emma Hamm

When a demon thinks he has everything, one women will prove that he is wrong…

Envy has stolen every single power in his kingdom. Through magic, he devours all those with magic, stealing it for himself. But the one power he has never managed to steal is the one that can see his future. So when an oracle appears in his kingdom, he knows he has to steal her for himself.
Lilith has grown up in a circus. Traveling throughout all of the kingdoms, she has seen much and predicted even more prophecies than ever before. Until a certain demon king waltzes into one of her performances, and all she can see is darkness in his future. There is no future in him, just as she cannot see a future in herself.
Stealing her is easy. But keeping her alive? That’s much harder.
The Demon King will stop at nothing to keep her for himself. When he cannot bring himself to steal her power, he decides that she will be his and his alone. But her old master has other plans. An insidious plot runs throughout the kingdom. Not just to overthrow the demon king, but to remove the threat from its source. Her.
He has more magic at his fingertips than any other creature to ever exist. And Envy will use every single spell he knows to keep her safe.