Zephagamon deck with the goal of using the Piercing keyword on as many Vortex Warriors as possible. Build a stack with Piercing and Memory +1 Inherited Effects and start blowing through the opponent's security while controlling their board through the End of Turn Vortex Effect on Zephagamon (EX7-036 and ST18-12). Unsuspending with Shoto Kazama (EX7-064) and GrandGalemon (EX7-034) Inherited Effect after stealing back the turn allows for multiple attacks from a single Zephagamon.
With the optimal setup an OTK is easily managed.
