Ashes to ashes, silt to silt
raw magical dust
Residuum can be used in place of any spell component or enchanting material required to craft magic spells and items.
Silver Sand, mage sand, lich dust; Residuum has many names, and few things will get you arrested and executed as quickly as possessing it. The softly glowing silver dust is the very embodiment of the fears of Athas. Rumors say that defilers can pull the life force from living things to create the raw material. Only the bravest, craftiest and most desperate of illegal traders will dare to touch the stuff.