Well God damn. I love it.
A specialist in the acquisition of lore from the dead, Lord Exhumator Scaverous is one of the most potent and intelligent servants of the Nightmare Empire. Souls are both ammunition and fuel for Scaverous. Those he slays and casts aside are fortunate compared to any possessed of special lore, whose skulls and souls he preserves for horrific necromantic interrogation.
What an awesome model. He kind of reminds me of what's his face...General Grievous from Star Wars. Except now he's not ruining a good story. I have a special place in my heart for scythes, I don't know why, but I'll definitely be buying this model. The fluff text doesn't seem to reveal much other than that he has Cull Soul. DURRRR. Maybe he can use collected souls as a ranged weapon/spell type deal? I dunno, time will tell.