Copper King: Takhini Shifters #1. Northern Lights Shifters, #7

Billionaire bear shifter Jim Halcyon has three priorities: work, pleasure, and winning. Preferably in that order. Every year he and a friend compete to win control of a mysterious copper coin-an ancient token of luck that's slipped through his fingers for far too long. Jim always gets what he wants eventually. Money, power, women-it's all within reach for a dominant bear shifter used to getting his way.
Until he meets Lillie. But in the world of shifters, fate has a way of interfering with even the best-laid plans. Sweet, shy, and far too tempting for a man who prides himself on staying in control, Lillie is only in Vegas for five days before she disappears into a brand-new life. She's determined to have one last adventure before settling down. Jim is happy to oblige. What starts as a harmless fling quickly turns into something neither bear shifter expected.
Because Lady Luck isn't the only force at work. And when fate decides to play its hand. even the most powerful bear in the room might lose control.