Sword Arm of Dragon + Aqua Snake → Kairyu-shin

Sword Arm of Dragon + 30,000-Year White Turtle → Kairyu-shin

Sword Arm of Dragon + Kappa Avenger → Kairyu-shin

Sword Arm of Dragon + Kanikabuto → Kairyu-shin

Sword Arm of Dragon + Zarigun → Kairyu-shin

Sword Arm of Dragon + Destroyer Golem → Stone D.

Sword Arm of Dragon + Barrel Rock → Stone D.

Sword Arm of Dragon + Minomushi Warrior → Stone D.

Sword Arm of Dragon + Stone Ghost → Stone D.

Sword Arm of Dragon + Kaminari Attack → Twin-headed Thunder Dragon

Sword Arm of Dragon + Tripwire Beast → Twin-headed Thunder Dragon

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