Homebrew Biologica Horrificus Species Details

An extreme variation of a shifter/shapeshifter hybrid, Biologica Horrificus are extremely rare. While they lack their shifter and shapeshifter lineage's abilities to rapidly transform their bodies into a desired form, they are able to implement gradual designed changes upon their bodies. This allows them to regenerate lost limbs and organs, grow new limbs and organs, and even change their entire body plan if given enough food, water and time. Common modifications include, but are not limited to extra arms, a more efficient cardio-respitorial system, enhanced muscles and skeleton and the ability to turn any item contain organic molecules into raw material to facilitate their growth and change. As such, no two Biologica Horrificus are identical, and all are a product of their own preferences and environmental needs, however, they all share similar traits that mark them different from their other races such as extra eyes spread across their bodies, tumorous growths around the limbs, spiraling patterns of extra skin and flesh used as an "battery" of extra biomass, as well as distinct stretch marks from new growth that are appear as florescent bands under blacklight.

This, combined with their rarity and shifter/shape shifter parenthood, result in Biologica Horrificus to be regarded mostly as the stuff of horrifying myth and legends at best, and dangerous, mistrustful monsters at worst. Few beings tolerate their presence, and ever fewer welcome them. As such, most Biologica Horrificus grow up to be highly self-reliant and distrustful, often only fully trusting a fellow Biologica Horrificus or shapeshifter/shifter. 

Biologica Horrificus Traits

Ability score adjustments

Regenerative Sleep

If no limbs were removed, a long rest will restore 6 health points, if limbs were removed, long rest will restore one limb and 2 health points

Requires extra breakfast the next morning or 1 unit of biomass

Darkvision

Thanks to your infernal heritage, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

Gradual evolution

1 unit of biomass = 2 kg of body
50% conversion rate of food into biomass
80% conversion rate of reabsorption into biomass
up to 200% base body mass of biomass storage available
Each unit of biomass change takes 12 hours

remove/grow
1 unit changes: Sensory organs, facial features, cranial hair, hands, feet, claws, horns
3 unit changes: Major organs, extra humanoid limb, genitalia, extra head (no brain included)
6 unit changes: Non-humanoid limbs (wings, tails, flukes etc. )

each evolution roll 3 d8 dices, if total score is below 4, mutation has failed, and no mutations can occur for the next 24 hours