Flame Swordsman + Punished Eagle → Crimson Sunbird

Flame Swordsman + Skull Red Bird → Crimson Sunbird

Flame Swordsman + Queen Bird → Crimson Sunbird

Flame Swordsman + Armed Ninja → Vermillion Sparrow

Flame Swordsman + Burglar → Flame Cerebrus

Flame Swordsman + Garvas → Flame Cerebrus

Flame Swordsman + Flower Wolf → Flame Cerebrus

Flame Swordsman + Peacock → Crimson Sunbird

Flame Swordsman + D. Human → Vermillion Sparrow

Flame Swordsman + Fire Kraken → Vermillion Sparrow

Flame Swordsman + Skullbird → Crimson Sunbird

Flame Swordsman + Monstrous Bird → Crimson Sunbird