Editing Lyster Larrey (section)

===The Lord of Life and Death===
Larrey was a key part of keeping these new Astartes a secret, but when [[Aubrey The Grey]] himself joined the Life Bringers just after Ullanor, he revealed he knew about them and could show Larrey the true secret to what sustained them. Larrey agreed, and Aubrey showed him the way of Nurgle, the Lord of Death and Rebirth. Larrey realized that he had always been following down the path of Nurgle, even if he did not realize it, and did not need encouragement to embrace the way of the Lord of Plague. He helped Aubrey bring the good news to Vrach as well, and once done Larrey requested leave to return to Mars and prepare the ground there for the coming storm. Vrach agreed, promising to meet him again on Terra. Sachs and his other disciples left to join other traitor Legions and teach them how to use the Warp and genecraft to enhance and improve themselves beyond what the Emperor had engineered.

His return to Mars was without any pomp or ceremony, but he immediately began to set to work, spreading his creed among the Gentors of the Mechanicum and creating an army of gene-wrought monsters filled with the power of Nurgle, an army that would be part of the assault upon Olympus Mons. Furthermore he began a new avenue of study: fusing flesh and warpcraft together to create superhuman beings fuelled by the Warp and even more powerful than any Space Marine. When the rebellion broke out, he unleashed his armies of warped beings that were once humans upon the loyalist Mechanicum and later the Legiones Astartes.
For much of the Heresy his location was unknown, moving from place to place, using captives from the Loyalist Legions to experiment on and using his expertise to help speed up the creation of new Marines for the Traitor Legions to replace battlefield losses. Several times agents of the Emperor tried to assassinate him, but every time it failed, only adding to his grim reputation.