Skull Servant + Celtic Guardian → Armored Zombie

Skull Servant + Illusionist Faceless Mage → Magical Ghost

Skull Servant + Kuriboh → Shadow Specter

Skull Servant + Mammoth Graveyard → Great Mammoth of Goldfine

Skull Servant + Kairyu-shin → Curse of Dragon

Skull Servant + Man-eating Plant → Wood Remains

Skull Servant + Crawling Dragon #2 → Skelgon

Skull Servant + Crawling Dragon → Skelgon

Skull Servant + Dragon Zombie → Skelgon

Skull Servant + Battle Warrior → Zombie Warrior

Skull Servant + Wings of Wicked Flame → Flame Ghost

Skull Servant + Curtain of the Dark Ones → Magical Ghost