Snowball Fight Gangster

Dismember {w}{u} ({w}{u},{t}: Put a -1/-1 counter on the blocking creature and create a 0/1 colorless Appendage creature token.)
At the beginning of your upkeep, go outside and make a snowball for each Appendage on the battlefield.
Sacrifice Snowball Fight Gangster: Have a snowball fight with every player in the room. Teams can be formed at your discretion.