Cassander was definitely feeling like he was getting ganged up on. This really wasn't fair. He was completely out of his element! Cass had stood up, finally managing to shake the rest of the snow off his back. He had turned, just as Bri was taking the next snowball from Conor with an obvious pout on her face. Protect the snow people, indeed.
She whipped the snowball at her father but she was three and she was short and so it was really no surprise when she dead-eye hit the worst possible place to hit her father in the history of snowballs. Now, admittedly, it was just a snowball. But there was a place in the back of his mind that said it was supposed to hurt a lot more so Cass just fell to his knees and then went face first into the snow. He was dead now. This was him dead. The snow people were defended.