Homebrew Adeptus Astrates Species Details

Augmentations of the soldier race: 

Secondary Heart

Phase 1: This simplest and most self-sufficient of implants allows a Space Marine to survive his other heart being damaged or destroyed, and to survive in low oxygen environments. Not just a back-up, the secondary heart can boost the blood flow around the body

Ossmodula

Phase 2: A small, complex, tubular organ, the ossmodula secretes hormones that both affect the ossification of the skeleton and encourages the forming bone growths to absorb ceramic-based chemicals that are laced into the Marine's diet.This drastically alters the way a Space Marine's bones grow and develop. Two years after this implant is first put in the subject's long bones will have increased in size and strength (along with most other bones), and the rib cage will have been fused into a solid, bulletproof mass of interlocking plates.It is not clear how a Space Marine's (non-implanted) lungs operate without a rib cage that can expand and contract.

Biscopea

Phase 3: This small, circular organ is inserted into the chest cavity and releases hormones that vastly increase muscle growth throughout the marine's body. It also serves to form the hormonal basis for many of the later implants.

Sinew Coils

Phase 3 Alpha: Known as the Steel Within, this implant is the only one which is cybernetic. The sinews (tendons and ligaments) are reinforced with Mythril coil-cables that contract with incredible force, magnifying the subject's strength beyond that of a regular humans and giving another layer of interior defense.

Magnificat

Phase 3 Beta: Known as the Amplifier, this small thumbnail-sized lobe is inserted into the brain's core. The implant secretes hormones that increases the body's growth functions while also intensifying its advanced systems, especially the ossmodula and biscopea.

Belisarian Furnace

Phase Unknown: Known as the Revitalizer, this dormant organ connects to both hearts. In times of extreme stress or trauma, it expels self-manufactured chemicals similar to combat stimms that also aid in regeneration. After activation, the gland will fall dormant again, taking some time to build itself up for activation once more. While information is scarce on when this implant normally occurs, it appears to lack its own phase, instead implanted with either the Sinew Coils, Magnificat, or both.

Haemastamen

Phase 4: Implanted into the main circulatory system, this tiny implant not only increases the haemoglobin content of the subject's blood, making it more efficient at carrying oxygen around the body and making the subject's blood a bright red, it also serves to monitor and control the actions of the phase 2 and phase 3 implants,

Larraman's Organ

Phase 5: A liver-shaped organ about the size of a golf-ball, this implant is placed within the chest cavity and connected to the circulatory system. It generates and controls 'Larraman cells', which are released into the blood stream if the recipient is wounded. They attach themselves to leukocytes (white blood cells) in the blood and are carried to the site of the wound, whereupon contact with air they form a near instant patch of scar tissue, sealing any wounds the Space Marine may suffer - acting like platelets, only better.

Catalepsean Node

Phase 6: Implanted into the back of the brain, this pea-sized organ influences the circadian rhythms of sleep and the body's response to sleep deprivation. If deprived of sleep, the catalepsean node cuts in. The node allows a Marine to sleep and remain awake at the same time by switching off areas of his brain sequentially. This process cannot replace sleep entirely, but increases the Marine's survivability by allowing perception of the environment while resting. This means that a Space Marine needs no more than 4 hours of sleep a day, and can potentially go for 2 weeks without any sleep at all.

Phase 8: This implant, also called "the Remembrancer", allows a Astrates to 'learn by eating'. It is situated in the spinal cord but is actually part of the brain. Four nerve bundles are implanted connecting the spine and the stomach wall. Able to 'read' or absorb genetic material consumed by the marine, the omophagea transmits the gained information to the Marine's brain as a set of memories or experiences. It is the presence of this organ which has led to the various flesh-eating and blood-drinking rituals for which the Astartes are famous.

Multi-lung

Phase 9: This additional lung activates when a Space Marine needs to breathe in low-oxygen or poisoned atmospheres, and even water. The natural lungs are closed off by a sphincter muscle associated with the multi-lung and the implanted organ takes over breathing operations. It has highly efficient toxin dispersal systems

Occulobe

Phase 10: This implant sits at the base of the brain, and provides hormonal and genetic stimuli which enable a Marine's eyes to respond to optic-therapy. This in turn allows the Apothecaries to make adjustments to the growth patterns of the eye and the light-receptive retinal cells - the result being that Space Marines have far superior vision to normal humans, and can see in low-light conditions almost as well as in daylight.

Adeptus Astrates Traits

Genetically augmented humans created to be soldiers with super human capabilities start with these traits.

Ability Score Increase

Your ability scores each increase by 1, and do to your augmentations strength and Constitution are increased by 2

Increased Life Span

Humans reach adulthood as well as Astrates but they have overcome the short life span of humans being able to live for many hundred years. The total amount they can live for is unknown as usually war claims them before old age. 

Size

Astartes humans are far larger than normal humans. Usually they stand around 10 feet tall and weigh around 600 pounds though they are still considered medium size.

Increased Speed

Your base walking speed is 40 feet.

Secondary Heart

 This simplest and most self-sufficient of implants allows a Space Marine to survive his other heart being damaged or destroyed, and to survive in low oxygen environments. Not just a back-up, the secondary heart can boost the blood flow around the Marine's body

Languages

You can speak, read, and write Common and one extra language of your choice. Humans typically learn the languages of other peoples they deal with, including obscure dialects. They are fond of sprinkling their speech with words borrowed from other tongues: Orc curses, Elvish musical expressions, Dwarvish military phrases, and so on.

Catalepsean Node

Implanted into the back of the brain, this pea-sized organ influences the circadian rhythms of sleep and the body's response to sleep deprivation. If deprived of sleep, the catalepsean node cuts in. The node allows a Marine to sleep and remain awake at the same time by switching off areas of his brain sequentially. This process cannot replace sleep entirely, but increases the Marine's survivability by allowing perception of the environment while resting. This means that a Space Marine needs no more than 4 hours of sleep a day to count as a long rest, and can potentially go for 2 weeks without any sleep at all before suffering from exhaustion. 

Occulobe

This implant sits at the base of the brain, and provides hormonal and genetic stimuli which enable the eyes to respond to optic-therapy. This in turn allows the Apothecaries to make adjustments to the growth patterns of the eye and the light-receptive retinal cells - the result being that Adeptus Astrates have far superior vision to normal humans, and can see in low-light conditions almost as well as in daylight.