What's the catch

...
An attorney was sitting in his office late one night, when the Devil appeared before him.

The Devil said to the lawyer:
- "I have a proposition for you. You can win every case you try, for the rest of your life. Your clients will adore you, your colleagues will stand in awe of you, and you will make embarrassing sums of money.
All I want in exchange is your soul, your wife’s soul, your children’s souls, the souls of your parents, grandparents, and parents-in-law, and the souls of all of your friends and I want to have anal sex with your 14 year old daughter."

The lawyer thought about this for a moment, then asked,
"So, what’s the catch?"