Blitz

Blitz is an ability learned by Sora, Terra, Ventus, and Aqua in the Kingdom Hearts series.

Kingdom Hearts
In Kingdom Hearts, Blitz is a quick finishing move performed by jumping and slamming the Keyblade downwards.

Kingdom Hearts: Chain of Memories
Blitz reappears as a Sleight in Kingdom Hearts: Chain of Memories and in Kingdom Hearts Re:Chain of Memories. It can deliver up to three blows in a powerful jumping combo upon the enemy. Press A or when it flashes on-screen to add an attack. Pressing when it isn't on-screen will cancel the Sleight.

Kingdom Hearts II
Blitz appears in Kingdom Hearts II as Sora's single hit starting finisher.

Kingdom Hearts Birth by Sleep
In Kingdom Hearts Birth by Sleep Blitz is one of the more powerful attack commands. While difficult to pull off, press the when prompted and if done correctly Terra, Ventus, or Aqua will perform three downwards slashes on the nearest enemy.