Lethal Formation

"Lethal Formation" ( Zetsumejin) is a series of Impact cards with Lethal Formation in its card name, currently unique to Katana World. They involve putting a Secret Sword into the soul of a Lethal Formation card and casting it from there after the opponent meets a certain requirement, giving the player the element of surprise since they don't know which Secret Sword you set.

Sets with Lethal Formation Cards

 * Booster Set 2: Cyber Ninja Squad
 * Booster Set 5: Break to the Future
 * Trial Deck 5: Ninja Onslaught

List of Lethal Formation Cards

 * Secret Sword, Lethal Formation
 * Super Lethal Formation

List of Support Cards

 * Agent Ninja, Mamiya