Counter Hammer

Counter Hammer is a Reprisal Command in Kingdom Hearts Birth by Sleep, exclusive to Terra. Xehanort, being the new host of Terra's old body, can also use its variant, albeit with darkness element added to it.

Mechanics
In Kingdom Hearts Birth by Sleep, Counter Hammer allows Terra (or Xehanort) to block the opponent's attack and counter attacks by pressing, he then strikes his Keyblade to the ground and creates a shock wave that both repels and hurts the enemy.