Snowballs? Ha! That was still water, and Katara knew how to deal with that. With every snowball lobbed, Katara stopped it in place and swung it right back, knowing a few of the snowmen's heads off. She wasn't known as a master waterbender for nothing.

But she couldn't avoid every snowball, so she assumed ice dodging Rule number one: be fast enough to react to the environment, and be clever.