His Alphas by Hawke Oakley

The first omega in 100 years.
Matheson didn’t choose to be an omega, but destiny has other plans. A prophecy is foretold that Matheson must find love among the enemy packs if they want to survive–and he only has a month to do it.
As the only son of the East Pack leaders, Matheson’s omega awakening throws a wrench into the status quo. When news spreads that there’s a rare omega among the Lake of Four Directions, the wolf packs settle on a truce to protect Matheson from gryphon shifters who would steal him for their own nefarious purposes.
Three protective alphas.
Despite their differences, three high-status alphas from the other packs band together. Ramsay, Colton, and Eric agree to protect Matheson with their lives. But it becomes a lot more complicated when all three alphas fall in love with Matheson–and the feeling is mutual.
The prophecy states that he can only fall in love with one… Right?
Can Eric, Ramsay and Colton protect Matheson from the gryphons? And is the unique bond between them enough to save the four packs from destruction?