A wizard in Curse of Strahd wants to cast through said familiar, would you allow it?

@ChrisPerkinsDnD A wizard with a familiar in CoS wants to cast through said familiar (touch-based spells). Would you allow it?

— Keith III (@KeiththeThird) September 12, 2016

I would not (for game balance reasons). #WOTCstaff https://t.co/e3HQc5DUW6

— (((Chris Perkins))) (@ChrisPerkinsDnD) September 12, 2016