Command Style

The Command Style is a new battle system that appears in Kingdom Hearts Birth by Sleep. Terra, Aqua, and Ventus have times when the Command Bar at the top of their Command Menu fills up after hitting enemies they can undergo a Style Change which grants increased strength and new Deck Commands. There are certain Command Styles that all of them can change into but they have their own unique Styles that only one can perform. Command Styles allow a different method for each of them to fight with either Magic or combo attacking.

Command Styles (LV1)
Upon meeting certain requirements while filling up the Command Gauge (located right above the Deck Command menu), a character may undergo a Style Change rather than executing a finishing attack. Every style change has certain requirements for activating; an example of executing Diamond Dust would be to fill up part of the Command Gauge with an Ice based attack

Command Styles (LV2)
While using a Level 1 Command Style, the player can further achieve a second level by filling up any specific Style Gauge. An example of how this would work is if Ventus finished Firestorms's Style Gauge with an Aero-spell, the result will be the powerful Cyclone Command Style.