Zantetsuken

Zantetsuken is an ability in Kingdom Hearts Final Mix, a sleight in Kingdom Hearts: Chain of Memories, and an ability for Limit Form in Kingdom Hearts II Final Mix. It is named after the attack that Odin uses in the Final Fantasy series. In the Final Fantasy series, Zantetsuken (斬鉄剣, Iron-Cutting Sword) is the famous attack that Odin used as a summon, causing Instant Death to all enemy that is not immune to sudden death, slicing the enemy in two.

Kingdom Hearts: Birth By Sleep
In the Jump Festa 2010 trailer, Terra is shown using a Zantetsuken attack to destroy an Unversed.

Kingdom Hearts Final Mix
Zantetsuken is a ground combo finisher which has a 30% chance to show up. It is obtained by defeating Kurt Zisa. It stuns Unknown/ Xemnas and you'll get 100 tech points from it.

Kingdom Hearts: Chain of Memories
Zantetsuken is a sleight that, once it breaks a card, it renders it unusable until the end of the battle. It is obtained at level 27 in Chain of Memories and at level 22 in ''Re:Chain of Memories. '' Requirements:

Kingdom Hearts II Final Mix
Zantetsuken is a ground combo finisher for Limit Form. It is the most powerful ground combo finisher in the game and is used as a counter attack after guarding an attack as limit form.

Kingdom Hearts 358/2 Days
When using Roxas or Xion with Omega Weapon, ground combos begin with a Zantetsuken-like slash. Also, when they equip Oathkeeper and Two Become One, a Zantetsuken-like slash becomes the ground combo finisher. This is also true for Sora, who ends his ground combo with a Zantetsuken-like slash if the Dream Sword is equipped.