Bella Forrest 
Finch Merlin and the Everlasting Vow [EPUB ebook] 

No more Mr. Nice Guy…Finch is tired of people jerking him around-and now, it’s time for payback against the powerful forces who have made him a pawn in their games. Returning to the surface world is his endgame, but while that seems nearly impossible, especially when a certain Necromancer and demigod have teamed up to take Finch out of the running, Finch plans to use all the tricks up his sleeve on his enemies. And before he’s force-fed the love potion that will ensure he loves Princess Kaya forever.Good thing Shapeshifters are known for their trickery.