Is it possible to use it in some way? It looks cool flavourwise but 5th level transformation spell at 13+ level is too weak. Even if you lizardfolk spellcaster with +0 str, you will have more chances to hit with your claws. Of course, dinosaur have more damage but does it matter with this chances to fail? And your AC in your original form will be higher too.
So what's the idea of this feat? How could I make it work?