Snowball may be placed on any bunny in The Bunny Circle which must roll higher than 13 on the Clear 20-sided die to survive. If the bunny survives, then Snowball moves to the next bunny clockwise in The Bunny Circle and increases in strength to Level 14. Each time that Snowball moves to the next bunny, the level of the weapon will increase by one until a bunny dies.
Snowball is played during one player’s turn, and no Barrier can stop Snowball.