Skull Servant + Rainbow Flower → Wood Remains

Skull Servant + Barrel Lily → Pumpking the King of Ghosts

Skull Servant + D. Human → Armored Zombie

Skull Servant + Prisman → Stone Ghost

Skull Servant + Laughing Flower → Wood Remains

Skull Servant + Bean Soldier → Pumpking the King of Ghosts

Skull Servant + The Statue of Easter Island → Stone Ghost

Skull Servant + Muka Muka → Stone Ghost

Skull Servant + Milus Radiant → Shadow Specter

Skull Servant + Eldeen → Magical Ghost

Skull Servant + Hane-Hane → Shadow Specter

Skull Servant + Skelgon → Curse of Dragon