Abraxas 1518 was the second born of Rylek.  She was the one to betray it to Slaanesh.  She was a proficient strategist, and warrior, showing proficiency in both planning and executing, complex missions.  For her Transgressions, she was rewarded by ascending to a Keeper of Secrets.  It began by her flesh being torn and rended by radiating energy, the internal skeletal-muscular structure, being restructured.  She sprouted horns, and her size grew almost expodentially.  The energy crackled as new flesh was being set, with a final shockwave of transmutating energy, Dheessiiq'ililbhg'gtlllfoldaarkwgzdhilyugzaeoaoollfolcogssaaaiioooeollowowoioiloerhuflccflaksaazhyyphchllflllphrhan, the Keeper of Secrets, was born.