Attack Haste

Attack Haste is an ability from Kingdom Hearts Birth by Sleep that decreases the reload time of Attack Commands. The ability can be stacked up to five times, greatly decreasing the reload times of the attack commands in your command deck.

Terra, Ventus, and Aqua
All three Birth By Sleep main characters can learn the Attack Haste ability through command melding, most oftenly by using a Fleeting Crystal when melding certain commands together.