I have a totemist who took Improved Natural Attack to boost the damage of the Claws from the Soulmeld Sphinx claws, and then decided to shape a different soulmeld that also gave claw attacks. (In this case, Girralon Arms bound to my Totem chakra.) Does Improved Natural Attack apply?
The way I read the feat, it applies to a subset of natural attacks, such as "claw," which both soulmelds impart when bound to the Totem Chakra. But I would rather have clarification to be sure. Does it apply to all claw attacks or just one source?