Feat for +Con to AC

[Kaedrin]

I know the Deepwarden has this ability at level 2. Does anyone know of another way to add Con to AC? I'd like to find one that could be added as a wild feat for druids but given that I don't remember ever seeing a feat like that I may be grasping at straws.

[nicethugbert]

That's the only one I've seen, but, my D&D knowlege is not encyclopedic. Is it a good idea to ask on the WotC forums?