Blitz

Blitz is an ability learned by Sora in the Kingdom Hearts series.

Kingdom Hearts
Kingdom Hearts, it is a quick attack performed by jumping and slamming the keyblade downwards.

Kingdom Hearts: Chain of Memories
It 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
It also appears in Kingdom Hearts II as Sora's single hit starting finisher.