Gaia the Dragon Champion + Bolt Escargot → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Bolt Penguin → Twin-headed Thunder Dragon

Gaia the Dragon Champion + The Immortal of Thunder → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Electric Snake → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Mega Thunderball → Twin-headed Thunder Dragon

Gaia the Dragon Champion + Electric Lizard → Twin-headed Thunder Dragon

Gaia the Fierce Knight + Curse of Dragon → Gaia the Dragon Champion

Curse of Dragon + Oscillo Hero #2 → Twin-headed Thunder Dragon

Curse of Dragon + Man-eating Plant → B. Dragon Jungle King

Curse of Dragon + Dark Plant → B. Dragon Jungle King

Curse of Dragon + Firegrass → B. Dragon Jungle King

Curse of Dragon + Man Eater → B. Dragon Jungle King