Unison Rush

Unison Rush (ユニオンラッシュ) is a technique in the international release of Kingdom Hearts Birth by Sleep and Kingdom Hearts Birth by Sleep Final Mix. It involves all three players rushing around the field and attacking enemies with their Keyblades, prompting them to press the button on-screen for maximum damage, similar to a type of Shotlock. It is most effective during Mirage Arena battles.

Mechanics
In Kingdom Hearts Birth by Sleep, Unison Rush is an Advanced Friendship Command that takes up three slots in the Command Deck, has a maximum level of 1, and a normal reload time of 50 seconds.

Kingdom Hearts Birth by Sleep

 * Terra, Ventus, and Aqua can purchase Unison Rush at the Medal Shop in the Mirage Arena for 3000 medals.