Slingsniper

Slingsniper is one of Luigi's Bros. Attacks in Mario & Luigi: Dream Team. This Bros. Attack is given to Luigi by Big Massif and Lil' Massif after completing the Ball Hop puzzle on Mount Pajamaja. It requires 9 BP to use this attack.

When the attack is initiated, a large slingshot is planted on the field. Once Luigi is inside the slingshot, the player will have to hold down on the Circle Pad to allow Mario to stretch it. Once the slingshot is fully stretched, the player will have to hold down the button while tilting the 3DS to aim. Letting go of the button will automatically launch Luigi in the direction the aiming reticle was pointing. The attack will fail if the player takes too long to aim or if Luigi misses the target. If the player lets go of the Circle Pad before pressing the button to fire Luigi, it  will automatically fire and will deal a minimal amount of damage to random enemy or the only one who is in battle. It is possible to hit several enemies in a row with the attack.

Description
''Slide and hold the Circle Pad down to draw back, hold the B button, and aim. Tilt the 3DS to line up your target, then release the B button to launch Luigi!''