I've got a few ideas of my own as to my mistakes... but I'd like to hear other people's thoughts on it.
Saddle of Erastil's Blessing
Aura moderate transmutation; CL 9th
Slot -; Price 15,000 gp; Weight 10 lbs.
Description
This elaborately-painted military saddle, constructed from darkwood and woven cedar bark, allows an otherwise mundane mount to gain a closer bond with its rider, enabling the two to work together in ways they otherwise could not.
Any animal equipped with the Saddle is easier to train. Training a mount using a Saddle of Erastil's Blassing halves the time required to teach new tricks and allows the mount to learn two more tricks than normal for its Intelligence score, though the extra tricks can only be used while wearing a Saddle. These benefits do not function for a mount which is an Animal Companion, Familiar, Special Mount, or similar.
In addition, the saddle grants the mount and rider an instinctive understanding of each others' movements, allowing both mount and rider to make Aid Another checks targetting each other as swift actions. This can only be applied to physical ability or skill checks and can only be done while the mount is actually being ridden.
Druids usually craft these saddles for their allies and companions who lack their bond with nature. While the vast majority of such saddles come from Erastil's sects, druids worshipping other gods occasionally create similar saddles, which are named for the creating druid's patron, but are otherwise identical.
Construction
Requirements Craft Wondrous Item, Wild Empathy, Awaken; Cost 7,500 gp