Star Egg

The Star Egg is an item won from Grate Guy after Mario wins "Look the Other Way" 100 times in Grate Guy's Casino during Super Mario RPG: Legend of the Seven Stars. The Star Egg does 100 damage to all enemies on the field by the inexplicable dancing of a Starslap and two Zeostars. A spotlight appears, the star dances a bit, and then a bird flies by; when the birds leave, enemies are dealt damage. If the user has the "Attack Up" effect such as from Geno Boost or the Quartz Charm, the damage output is raised to 150.

Trivia

 * The Smash Egg from Mario & Luigi: Partners in Time physically resembles the Star Egg.