Changes

Any Space Marine who undergoes the the Rubicon Primaris must prepare for an extensive and agonizing operation. It is conducted by many surgeons and medical [[Servitor]]s who will cut open the Space Marine from his crown to his heels. His ribcage will then cracked apart and – at the climax of the operation – the Space Marine's healing physiology suppressed to the point that his life will slip away. All this is done so that the three extra organs a Primaris contains can be safely implanted within the Space Marine's body. This includes the [[Magnificat]], which is buried deep within the brain to stimulate growth and to intensify other organ functions, the [[Belisarian Furnace]], which releases a burst of hypersteroids and corticostimulants when a mortal blow is dealt, so the Primaris may fight on, and the [[Sinew Coil]]s, cable-like lengths of durasteel that encase every tendon and sinew in a metallic sheath that gives tremendous resilience and strength. When the organs are successfully implanted, the now deceased Space Marine's body is left rent and open to the air as his wounds are stitched closed. When the surgeons are done they electrify the Space Marine's heart in order to cause it to beat once more. If the Space Marine is then able to claw his way back from death his Belisarian Furnace will activate and awaken him as a newly created Primaris Marine.{{Fn|1}} Sinew Coils can simply be manufactured, as they are durasteel cybernetic implants, but the Magnificat and Belisarian Furnace are genuinely geneseed organs in their own right; it has never been clarified where the surgeons acquire compatible organs to implant in the patient.

==Space Marines known to have undergone the Rubicon Primaris==