Collision Magnet

Collision Magnet (マグネクラッシュ) is a technique that appears in Kingdom Hearts Birth by Sleep and Kingdom Hearts 3D: Dream Drop Distance. It allows the user to pull a single enemy toward them with magnetic force, then send it crashing into other foes.

Kingdom Hearts Birth by Sleep
In Kingdom Hearts Birth by Sleep, Collision Magnet is an Advanced attack command that takes up one slot in the Command Deck, has a maximum level of 4, a normal reload time of 20 seconds, and fills the Command Gauge by 25%.

Kingdom Hearts 3D: Dream Drop Distance
In Kingdom Hearts 3D: Dream Drop Distance, Collision Magnet is an attack command that uses one slot in the Command Deck, and has a reload time of 22 seconds.

Kingdom Hearts Birth by Sleep

 * Terra, Ventus, and Aqua can create Collision Magnet through Command Melding.
 * Ventus can obtain Collision Magnet through his Crown Stickers for 80 points.
 * Collision Magnet can also be bought from the Moogle Shop for 1300 munny once the command has already been obtained elsewhere.

Kingdom Hearts 3D: Dream Drop Distance

 * Riku can obtain Collision Magnet from a chest on the inverse side in Monstro: Belly in Prankster's Paradise.

Kingdom Hearts Birth by Sleep

 * Collision Magnet: Triple Wrecker (5%)

Kingdom Hearts Birth by Sleep
Collision Magnet is an Advanced-class Attack Command that can be melded through three different recipes, listed in the Mega Attack Recipe.
 * The first recipe can be melded by Terra, Ventus, Aqua, and is a recipe that has an 80% success rate with a 20% chance of transforming into Magnet Spiral when melding.
 * Zero Gravira (LV3) + Magnet (LV3)
 * The second recipe can be melded by Terra, Ventus, Aqua, and is a recipe that has an 80% success rate with a 20% chance of transforming into Magnet Spiral when melding.
 * Quick Blitz (LV3) + Magnera (LV3)
 * The third recipe can be melded by Terra, Ventus, Aqua, and is a recipe that has an 80% success rate with a 20% chance of transforming into Magnet Spiral when melding.
 * Stun Edge (LV3) + Magnera (LV3)

Other appearances
The Unknown utilizes a technique similar to Collision Magnet in his battle.