Oscillo Hero #2 + Harpie's Pet Dragon → Twin-headed Thunder Dragon

Oscillo Hero #2 + Metal Dragon → Twin-headed Thunder Dragon

Oscillo Hero #2 + Sky Dragon → Twin-headed Thunder Dragon

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

Oscillo Hero #2 + Stone D. → Twin-headed Thunder Dragon

Oscillo Hero #2 + Kaiser Dragon → Twin-headed Thunder Dragon

Oscillo Hero #2 + Aqua Dragon → Twin-headed Thunder Dragon

Oscillo Hero #2 + Sea King Dragon → Twin-headed Thunder Dragon

Oscillo Hero #2 + Spike Seadra → Twin-headed Thunder Dragon

Oscillo Hero #2 + Skelgon → Twin-headed Thunder Dragon

Oscillo Hero #2 + Tyhone #2 → Twin-headed Thunder Dragon

Oscillo Hero #2 + B. Dragon Jungle King → Twin-headed Thunder Dragon