Geno Whirl

Geno Whirl is an attack Geno learns at Level 11 in Super Mario RPG: Legend of the Seven Stars. It is a disk attack that follows a straight path to and through the enemy. Geno Whirl is notable for being one of the most powerful attacks in the game; if timed correctly it will deal 9999 damage, but this doesn't apply to bosses (except for Exor and clones of Yaridovich). The correct timing is when the whirl leaves the screen. The attack must be timed precisely; otherwise it will miss and do a low amount of damage.

Trivia

 * Geno Whirl is one of the few magic attacks Geno can perform that does not instruct the player beforehand.