From Adam Prosak:

I really enjoyed playing werewolves during the FFL process.  One of the things we did with werewolves this time around was to give them some flash creatures, so that you could flip the werewolves in Shadows over Innistrad without skipping your turn.  Cards like Howlpack Resurgence and Spirit of the Pack are really fun to play, as you have lots of options as to how to play them. They can serve as combat tricks or ways to keep your opponent off balance, and they play well with transforming your werewolves.