Source: Complete Arcane
You develop the natural weapons of your draconic ancestors.
Prerequisite: Draconic Heritage.
Benefit: You gain claws. You can make a natural attack with your claw, dealing damage based on your size (Small 1d4, Medium 1d6, large 1d8). In any round when you cast a spell with a casting time of 1 standard action, you can make a single claw attack as a swift action against an opponent you threaten.