Spike Seadra + Electric Lizard → Twin-headed Thunder Dragon

Spike Seadra + Lady of Faith → Kaminari Attack

Spike Seadra + Armored Starfish → Kairyu-shin

Spike Seadra + Rock Spirit → Kaminari Attack

Spike Seadra + Snakeyashi → B. Dragon Jungle King

Spike Seadra + Succubus Knight → Sword Arm of Dragon

Spike Seadra + Ill Witch → Kaminari Attack

Spike Seadra + The Thing That Hides in the Mud → Stone D.

Spike Seadra + High Tide Gyojin → Kairyu-shin

Spike Seadra + Fairy of the Fountain → Kairyu-shin

Spike Seadra + Witch's Apprentice → Kaminari Attack

Spike Seadra + Maiden of the Moonlight → Kaminari Attack