The Snow Balla is a monster that was added in the 1.1.1 Christmas update. He is part of the Frost Legion, which means that he will only spawn if you use a Snow Globe that you get from presents during the Christmas holiday. The Snow Balla is a snowman that throws snowballs that turn into a Snow Block on impact with an object, acting similarly to how an Antlion shoots sand. He drops snow blocks and coins upon death.