Koumori Dragon + Weather Report → Spike Seadra

Koumori Dragon + Mechanical Snail → Metal Dragon

Koumori Dragon + Greenkappa → Sword Arm of Dragon

Koumori Dragon + Living Vase → B. Dragon Jungle King

Koumori Dragon + Tentacle Plant → B. Dragon Jungle King

Koumori Dragon + Morphing Jar → Stone D.

Koumori Dragon + Giant Turtle Who Feeds on Flames → Spike Seadra

Koumori Dragon + Rose Spectre of Dunn → B. Dragon Jungle King

Koumori Dragon + Ghoul with an Appetite → Skelgon

Koumori Dragon + Violent Rain → Spike Seadra

Koumori Dragon + Penguin Soldier → Spike Seadra

Koumori Dragon + Liquid Beast → Spike Seadra