Magic Lamp Spirit Genie:
Go to the Fields of Massacre and defeat 500 monster there. Target Doom Knight, Doom Scout, Doom Servant, Doom Guard, Doom Archer, Doom Trooper, Doom Warrior, Archer of Destruction, Graveyard Lich, Dismal Oak, Graveyard Predator, Guard Butcher specifically. Summon me when you finished.
Come talk to me if you need anything else.