A cache of Warpstone Tokens
The pieces of refined Warpstone known as Warpstone Tokens are consumed by power-hungry Skaven Grey Seers or the Warlock-Engineers of Clan Skryre to aid their spellcasting. This is dangerous as it can lead to mutation and death, but the quick road to power is an irresistible draw for almost any Skaven.[1a]
Warpstone Tokens are also used as the chief form of currency within the Skaven Under-Empire.[2a]