Draconic Claw( Races of the Dragon, p. 102)
You develop natural weapons like those of your draconic ancestors.
Draconic Heritage (RDr) , sorcerer level 1st,
You gain a claw attack. You can make a natural attack with two claws, dealing damage based on your size as if you were truly a dragon (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 at your full attack bonus as a swift action (see page 122) against an opponent you threaten.