Tahnarism is the ability to manipulate a portion of the Anti-Principle (the "force" present in Bukrai) to accomplish tasks. It is an attempt to introduce necromantic magic into Hârn that does not rely on the Morgathian Church and its pre-occupation with death.
This 'double' issue includes 24 characters to be used in any way the GM sees fit; as NPC opponents, helpers or even emergency PCs for that player who turns up unexpectedly.