Yamadron + Minomushi Warrior → Stone D.

Yamadron + Stone Ghost → Stone D.

Yamadron + Kaminari Attack → Twin-headed Thunder Dragon

Yamadron + Tripwire Beast → Twin-headed Thunder Dragon

Yamadron + Bolt Escargot → Twin-headed Thunder Dragon

Yamadron + Bolt Penguin → Twin-headed Thunder Dragon

Yamadron + The Immortal of Thunder → Twin-headed Thunder Dragon

Yamadron + Electric Snake → Twin-headed Thunder Dragon

Yamadron + Wing Eagle → Crimson Sunbird

Yamadron + Punished Eagle → Crimson Sunbird

Yamadron + Skull Red Bird → Crimson Sunbird

Yamadron + Queen Bird → Crimson Sunbird