Skra'kalichaust the Schemer is a mischievous Lord of Change, a Greater Daemon of Tzeentch who seems to take delight in the ongoing struggles for glory amongst the warbands of the Screaming Vortex. This daemon is one of the enigmatic Lords of Change who serve Tzeentch, a matchless Sorcerer who appears to be using warbands in the Screaming Vortex as pieces in some greater game. Skra'kalichaust has made bargains with a number of warbands within the Vortex, granting them power or passage from one world to another in return for seemingly innocuous services or favours.
However, these pacts should not be made lightly, a fact that is made clear in the tale of Skartos Blackskull. Skartos and his warband were once on the ascendant, and many predicted that he would soon gain the daemon princedom that he sought so passionately. However, Skartos made a badly-worded agreement with the Schemer in order to launch an ambush against a rival warband. At the end of the battle, the Lord of Change demanded his due...and promptly razed Skartos and his entire warband into oblivion.
- Black Crusade: Core Rulebook (RPG), pg. 346