Koumori Dragon + Jellyfish → Spike Seadra

Koumori Dragon + Giant Soldier of Stone → Stone D.

Koumori Dragon + Man-eating Plant → B. Dragon Jungle King

Koumori Dragon + Axe Raider → Sword Arm of Dragon

Koumori Dragon + Catapult Turtle → Spike Seadra

Koumori Dragon + Zanki → Sword Arm of Dragon

Koumori Dragon + Armored Zombie → Dragon Zombie

Koumori Dragon + Dragon Zombie → Skelgon

Koumori Dragon + Clown Zombie → Dragon Zombie

Koumori Dragon + Pumpking the King of Ghosts → Curse of Dragon

Koumori Dragon + Battle Warrior → Sword Arm of Dragon

Koumori Dragon + Kageningen → Sword Arm of Dragon