Rise of the Twilight Empire
A strange amalgamation of eagle and horse, with the speed and appetite of the former coupled with the size and power of the latter. Hippogriffs originated from Feywild, like many other strange amalgamations of its kind, but most crossed over to the material plane so long ago that they are now completely native creatures.
Hippogriffs raised in captivity can be quite docile and make excellent flying mounts. Hippogriff riders were once relatively common in the days of Nerath, but since the fall of the White City few have remembered the art, and most have gone feral.