Chaos Sorcerer Lord
Chaos Sorcerer Lords are the oracles and seers of the Slaves to Darkness. They manipulate and twist the raw energies of Chaos, flensing a man's soul and infusing his flesh with daemonic power uttering but a single incantation. Due to their close connection to the Dark Gods, they often hold high positions within a tribe, as it is they who can best divine their true intentions. A commonly held superstition is that killing such a warlock is bad luck - although this does not stop cocky champions from trying. 
Whilst most Sorcerers are less physically imposing, this does not mean they are any less capable of defending themselves - they can unleash bolts of warpfire, twist their opponents form into myriad new and unsettling shape, and even predict impending betrayal. Due to this, a Sorcerer Lord is often the most deprived of the Dark God's servants - to keep and extend this power they will commit any unspeakable act, make any ritual sacrifice and bargain with the daemonic, inevitably slipping further into insanity and mutation. 
To redress their perceived physical frailties, a Chaos Sorcerer Lord will often seek to even the balance through enslaving a Manticore to their will. Unlike Chaos Lords, sorcerers do not break the beasts through force alone - they employ spells of binding and mental domination to enthral the beasts and force them to submit to their will. This does not always work - and more than one warlock has met a grizzly end after attempting to force servitude onto a particularly stubborn Manticore, or letting their magical control slip. Yet the risk is well worth the reward for many, as those who manage to successfully bind such a creature find themselves with a mount that responds almost instantly to their every whim, furiously tearing the foe apart while the Sorcerer Lord is free to work their magic unimpeded.