Material kits will always spawn with a material type, with a base weight of 5.0s. Material kits are the only way to change the material of Godly quality items and living weapons. Non-living miracle quality artifacts can have their material altered by scrolls of change/inferior/superior material. Material kits can be purchased at the souvenir vendor in Larna (they are very expensive) or found rarely in dungeons. Nightmare!, Minotaur King, and Cat House subquests have material kits as rewards. Material kits have the same sprite as Garok's Hammer, but are colored to match their material.