This card can be used to increase the ATK of "King of the Skull Servants" by 3000, by sending "Wightprince" to the Graveyard, which will send "Skull Servant" and "The Lady in Wight". Alternatively, it can be used to send "Mezuki", so that it can Special Summon a "King of the Skull Servants".
This card can be used to discard a "Dark World", "Fabled" or "Danger!" monster, triggering its effect.