I was fiddling around with the idea of bringing back the Hawk Riders and wanted to know if the feat Boon Companion could be made allowable in the chat. It gives players a chance to make a giant eagle as a mount for the Hawk Riders. With a background submission it could be a way to bring them back without making an entirely new homebrew class to do it.

Boon Companion

Your bond with your animal companion or familiar is unusually close.

Prerequisite: Animal companion class feature or familiar class feature.

Benefit: The abilities of your animal companion or familiar are calculated as though your class were 4 levels higher, to a maximum effective druid level equal to your character level. If you have more than one animal companion or familiar, choose one to receive this benefit. If you dismiss or lose an animal companion or familiar that has received this benefit, you can apply this feat to the replacement creature.

Special: You can select this feat more than once. The effects do not stack. Each time you take the feat, it applies to a different animal companion or familiar.