A Mage's Proposal is a a side quest available in the Underdark, which can be accessed in chapter of Baldur's Gate II: Shadows of Amn and very likely in Baldur's Gate II: Enhanced Edition. * Buy a Freedom scroll from the Duegar in the Underdark and cast it somewhere in the area to release the mage Vithal. The spell freedom works too, but you probably don't have a mage who has the level required to cast lvl 9 spells. * Speak to Vithal and he will ask you to retrieve his Book of Rituals from the Svirfneblin. * Speak to the innkeeper in the Svirfneblin village to the north and pay him 300 gold for the Book of Rituals. * Return to Vithal with the book and follow him to the Earth Elemental portal to the southeast. * Defeat the Greater Earth Elemental and then wait for Vithal to