A circular aura of spinning blades comes into being, centered on the caster. When an enemy approaches to attack, they must cross through the barrier. Therefore, they take moderate damage.
Often, the opponent's Whale will go after the caster of this spell's turn, and will use the attack Fish Tail. Being caught in the spell's blades, the Whale will flop about violently and die from being sliced to bits. This humorous occurrance is a running joke of the spell.