Koumori Dragon + Arma Knight → Spike Seadra

Koumori Dragon + Mech Mole Zombie → Dragon Zombie

Koumori Dragon + Penguin Knight → Spike Seadra

Koumori Dragon + Phantom Ghost → Dragon Zombie

Koumori Dragon + Dorover → Spike Seadra

Koumori Dragon + Twin Long Rods #1 → Spike Seadra

Koumori Dragon + Kaminarikozou → Thunder Dragon

Koumori Dragon + Kagemusha of the Blue Flame → Sword Arm of Dragon

Koumori Dragon + Flame Ghost → Dragon Zombie

Koumori Dragon + Trap Master → Sword Arm of Dragon

Koumori Dragon + Fiend Sword → Sword Arm of Dragon

Koumori Dragon + Skull Stalker → Sword Arm of Dragon