Finishing Bros.

Finishing Bros. is a special move performed by Giant Luigi in Mario & Luigi: Dream Team. The move icon automatically appears when HP of the boss character is nearly depleted.

When HP bar of the boss is nearly depleted, it flashes, giving no option other than this attack. When this icon is pressed, Giant Luigi jumps up into the space and grabs a Super Star. When Mario jumps on a Super Star, Giant Luigi throws it toward the weakened boss to hit the weak spot. While the attack is on the way, tilt Nintendo 3DS left and right to aim at the weakened boss; the star icon starts to appear, acting as the crosshair. Missing the target results an "OK!" attack, while direct hit results an "Excellent!" attack, showing it in every angle.

Star Driver
In Giant Bowser battle, a strong version of this attack called Star Driver is performed. Star Driver is basically the same as Finishing Bros., except that Prince Dreambert makes the star bigger. The star crosshair is not present for this move. Instead Mario has to dodge the incoming fireballs that Giant Bowser is shooting. After avoiding all fireballs, the move goes directly to Bowser, crashes into him and defeats him. If Mario is hit by one of fireballs, the move will end in failure and Bowser will come out from the pool of lava.

Description
Aim with the 3DS!

Trivia

 * During the attack, Mario rides a Super Star in a similar fashion to the Warp Star.