This incantation is the only means to enter Vanrakdoom, the level of Undermountain hiding the Dark Ranger.

The first fragment in in possession of Lady Alustriel of Silverymoon.

The second fragment is in the lair of the lamia sorcerer, Koreeis.

The third fragment in in the hands of Manshoon, Archmage of the Zhentarim.

The location of the fourth fragment remains a mystery…