Seiyaryu + Bolt Escargot → Twin-headed Thunder Dragon

Seiyaryu + Bolt Penguin → Twin-headed Thunder Dragon

Seiyaryu + The Immortal of Thunder → Twin-headed Thunder Dragon

Seiyaryu + Electric Snake → Twin-headed Thunder Dragon

Seiyaryu + Mega Thunderball → Twin-headed Thunder Dragon

Seiyaryu + Electric Lizard → Twin-headed Thunder Dragon

Three-legged Zombies + Millennium Shield → Zombie Warrior

Three-legged Zombies + Labyrinth Wall → Stone Ghost

Three-legged Zombies + Mystic Lamp → Magical Ghost

Three-legged Zombies + Swordsman from a Foreign Land → Zombie Warrior

Three-legged Zombies + Metal Dragon → Curse of Dragon

Three-legged Zombies + Sky Dragon → Curse of Dragon