Shotlock

Shotlock (シュートロック) is a combat system for Terra, Aqua, and Ventus that debuted in Kingdom Hearts Birth by Sleep. It is initiated by holding L and R. The user enters first person mode and locks on to enemies. When the maximum amount of enemies are locked on to, the user then initiates a powerful magic-based attack that hits all targeted enemies without fail. Using a Shotlock uses up the Focus Gauge, which can be refilled by attacking enemies and using Ethers. Most of the Shotlocks in the game can be learned by all three Keyblade wielders, but they also get several that are unique to them.

General
There are three basic types of Shotlocks that can be categorized based on the type of button input. One involves pressing the button repeatedly while the user fires many blasts of magic. Another involves the user dashing around surrounded by an elemental aura and ending with the player putting in the right combination to generate large pillars of magic. The last form involves timing and pressing the button as a ring lines up with another, this usually has the user firing blasts of different magic in rounds similar to Ragnarok.