Dragon Zombie + Mega Thunderball → Twin-headed Thunder Dragon

Dragon Zombie + Electric Lizard → Twin-headed Thunder Dragon

Yamatano Dragon Scroll + Sanga of the Thunder → Twin-headed Thunder Dragon

Yamatano Dragon Scroll + Thunder Dragon → Twin-headed Thunder Dragon

Yamatano Dragon Scroll + Kaminari Attack → Twin-headed Thunder Dragon

Dragon Statue + Sanga of the Thunder → Twin-headed Thunder Dragon

Dragon Statue + Kaminari Attack → Twin-headed Thunder Dragon

Darkfire Dragon + Sanga of the Thunder → Twin-headed Thunder Dragon

Darkfire Dragon + Thunder Dragon → Twin-headed Thunder Dragon

Darkfire Dragon + Kaminari Attack → Twin-headed Thunder Dragon

LaLa Li-oon + Yamadron → Twin-headed Thunder Dragon

LaLa Li-oon + Seiyaryu → Twin-headed Thunder Dragon