The cancelled shooter videogame "Syncred: Off Planet" has been the inspiration for this idea. It is about controlling a psionic elemental/construct creature like a symbiont or monster ally. 

“Greysargilla doesn't obey orders. It responds to will.”

The Synchronizer is a psionic conduit capable of activating and directing greysargilla (grayclay), a living substance of unknown origin that combines traits of construct, elemental, and psionic entity. Through a mental link, the Synchronizer can mold it for various tactical and narrative purposes.

Central Fantasy Not a classic summoner. Not an artificer surrounded by gadgets. It is will + symbiosis. If the link is broken, the greysargilla becomes unstable, erratic, or even dangerous.

Basic Class Traits Hit Die d8 (similar to monk or bard)

Proficiencies

Armor: Light

Weapons: Simple

Savings: Wisdom or Intelligence (choose at character creation), Constitution

Skills: Choice of Perception, Investigation, Athletics, Acrobatics, Arcana, Insight

Primary Attribute

Intelligence or Wisdom (player's choice)

INT → technical control, precision, complex configurations

WIS → intuition, organic symbiosis, emotional control

Core Resource: Synchronization Points

It functions similarly to: monk's ki psionic points sorcerer's sorcery

Spend them to:

change the shape of the grise

boost attacks

react defensively

force rapid adaptations

Recover with: short rest (Partial) Long rest (Total)

Iconic Trait Level 1: Grismarsh Bond

You gain a dormant mass of grissmarsh that: occupies your space is not an object is not a separate creature by default While you are conscious: responds to mental commands (no action) shares initiative with you uses your mental saving throws

Manifestation Modes (Class Core)

Starting at 1–2 levels, you can assume one active form at a time, and change it by spending Synchronic Points.

1. Symbiote Mode Temporarily increases AC or HP May grant: Damage resistance Enhanced senses Physical adaptations (climbing, swimming, special vision) Visually: Fluid plates, metallic veins, multiple eyes

2. Implant Mode Enhances specific actions: Psionic attacks Remote manipulation Defensive reaction Ideal for "controller" builds

3. Armor Mode The grayscale forms a living pseudo-armor Can replace traditional armor Scales with level Not heavy, but feels oppressive

4. Allied Entity Mode Detaches as an allied creature Uses simplified stats Shares a portion of your HP or resources If it falls to 0 HP, you suffer the consequences 5. Mount Mode Beastly or mechano-organic form Increases mobility and mounted combat Ideal for exploration and tactical loads

Psionics and “Spells”

The Synchronizer does not cast traditional spells. Instead, use: Synchronization Techniques Effects equivalent to psionic spells (telekinesis, mental shields, partial disintegration, etc.) With no obvious verbal or somatic components

Example: Dissolution Pulse (like Inflict Wounds but psionic) Adaptive Reconfiguration (reactive buff) Absolute Command (limited mental control over allied grayscale)

Subclasses: Synchronization Protocols Obtained at level 3.

🟥 REV Protocol (Clearly inspired by the REV-9)

Theme: Solid exoskeleton + fluid swarm

Role: Bruiser / Aggressive tank

Traits: You can split the grayscale into:

a solid body (armor/exoskeleton)

an autonomous offensive extension

Improved melee attacks

Regeneration Limited

Ability to regenerate after being reduced to 0 HP (1 time per long rest)

Visual: Liquid metal, artificial bones, fluid mass detaching and returning.

🟦 Nexus Protocol

Theme: Remote control and multitasking

Role: Tactical Controller Maintain multiple minor manifestations simultaneously

Excellent field control

Weaken enemies synchronized with the Grisargilla

Ideal for strategic players

🟩 Chimera Protocol

Theme: Adaptive evolution

Role: Versatile / Explorer

The Grisargilla learns from enemies

Gain temporary adaptations after taking damage

Highly narrative and dynamic

🟪 Archon Protocol

Theme: Absolute psionic mastery

Role: Psionic DPS Transform the Grisargilla into a concentrated weapon of destruction

Less defensive, more devastating

High risk if you lose control