Falling Star is the final Bro Item learned by Mario and Luigi in Mario & Luigi: Sibling Rivalry.
Falling Star is the most powerful bro item.
When this attack is activated, a large star appears on the top screen, along with smaller stars next to each Mario Bro. Chip also flies up to the top screen, transforming into an aiming cursor. The large star switches between red and green, and the player must hit the button of the corresponding brother repeatedly. The player must also use the control pad to keep Chip focused on the large star, as it bounces around the screen for the duration of the attack. When the action command is finished, the large star will crash into a single enemy, followed by each of the smaller stars. Groups of seven small stars fall first, followed by individual stars, which do less damage.