Sword Arm of Dragon + Bolt Penguin → Twin-headed Thunder Dragon

Sword Arm of Dragon + The Immortal of Thunder → Twin-headed Thunder Dragon

Sword Arm of Dragon + Electric Snake → Twin-headed Thunder Dragon

Sword Arm of Dragon + Magical Ghost → Curse of Dragon

Sword Arm of Dragon + Sea Kamen → Kairyu-shin

Sword Arm of Dragon + Ameba → Kairyu-shin

Sword Arm of Dragon + Rainbow Flower → B. Dragon Jungle King

Sword Arm of Dragon + Barrel Lily → B. Dragon Jungle King

Sword Arm of Dragon + Yado Karu → Kairyu-shin

Sword Arm of Dragon + Turtle Raccoon → Kairyu-shin

Sword Arm of Dragon + Prisman → Stone D.

Sword Arm of Dragon + Cyber Saurus → Metal Dragon