And while we are at it, why not find Mondain's Skull and destroy it at the mouth of the Abyss? And also, to survive the Abyss, you need the Mystic Armor and. About this mod. Quest for the Skull of Mondain! The perfect artifact for your evil character; or for the good guys, you can resist the temptation and. It has one game quest usage. When you try to enter the Abyss it is one of the items required. Outside of that, if you use it in battle it will instantly kill all enemies . He also noted the same thing I did about the location of the Skull of Mondain: " Who among us ever played Ultima IV and found that extremely. In Ultima IV, the Stranger found the skull on the seabed between three volcanoes , at double new moons. The volcanoes would later form the island of Terfin, and. Let's Play Ultima 4, 5, and 6 by Nakar - Part 6: Honor - Part I. you happen to be searching under two new moons, at which point you get the Skull of Mondain. See also Ultima IV: Quest of the Avatar (NES)/Side quests#Mondain's skull about Mondain's Skull: Ragnar (from the reaper) explains what happens if the Skull. For Ultima: Quest of the Avatar on the NES, a GameFAQs message board topic titled "Skull of Mondain". This only applies to the PC based versions of Ultima IV; I don't think the NES allows you to destroy the Skull in this way. Underworld Dragon's Ultima IV Transcript. Ultima IV. "job, skull, redeem". Jump up ↑ Tanaka, Yuko. Quest of the Avatar (Ultima IV).