Ascension of the Thrice-Blessed

The Ascension of the Thrice-Blessed is a lamentable castigation campaign carried out against the innocent people of the Chiros Sector by the corrupted Forsworn Chaos Warband. In recognition of the slaughter and devotion of the Warband's Chaos Lord Arkann Dionus to the Dark Prince Slaanesh, he was transformed by Chaos God into a Daemon Prince.

History
Arkann Dionus had ever since his corruption reaped an impressive toll of misery, debauchery and death in Slaanesh's perfect name. The Chiros Sector was ravaged and its people corrupted or slain, his Warband feared by even the Inquisition for their effectiveness. While other supplicants of Slaanesh would revel in joyous degeneracy, Arkann was totally devoted to sublime and immaculate killing. His supreme swordsmanship was so awe-inspiring that he was known to slice apart Space Marines within a mere blink of the eye, their bodies gushing blood so deliciously.

For all he had sown upon the galaxy, and all he undoubtedly would in the future, the Dark Prince saw fit to bestow on the Twice-Cursed another gift. When surrounded by hundreds of mortal cultists invoking Slaanesh, their minds almost blank from narcotics and carnal pleasure, Arkann's body expanded and contorted, the touch of the Warp transforming the once noble Chapter Master of the Astral Consuls into a Daemon Prince of Slaanesh. Letting out a scream of pure elation, and in a few passing seconds, and with a few blinding motions, slew all that surrounded him, each one experiencing pleasure and pain in equal measure before their blood covered the walls of the antechamber like art.