Counter Hammer

Counter Hammer (リベンジスタンプ) is a technique in Kingdom Hearts Birth by Sleep. Despite being exclusive to Terra, Xehanort can also use a darker variant of this technique, as he is an extension of Terra. Counter Hammer allows the user to unleash a shockwave by striking the ground with their Keyblade after a successful block.

Mechanics
In Kingdom Hearts Birth by Sleep, Counter Hammer is a Reprisal Command that has a maximum level of 4.

Kingdom Hearts Birth by Sleep

 * Terra can purchase Counter Hammer from the Moogle Shop for 1200 munny once the command has already been obtained elsewhere.