Sub-Arm Deployment System

Your body houses a pair of compact mechanical sub‑arms modeled after heavy‑frame support limbs. These auxiliary manipulators fold seamlessly into your chassis and deploy instantly to assist in combat and precision tasks.

Stabilizing Brace

When you make an attack with a melee weapon, you gain a +1 bonus to the attack roll as the sub‑arms lock the weapon into position.

Grappling Servos

You have advantage on Strength (Athletics) checks made to grapple or maintain a grapple.

Once per turn when you hit a creature you are grappling, you deal extra damage equal to your proficiency bonus as the sub‑arms wrench or pin the target.

Pinning Clamp

As a bonus action, you may attempt to restrain a creature you are grappling.
The target must succeed on a Strength saving throw (DC = 8 + your proficiency bonus + your Strength modifier) or be restrained until the start of your next turn.

You may use this feature a number of times equal to your proficiency bonus, regaining all uses on a long rest.

Auxiliary Manipulation

The sub‑arms can hold or manipulate objects weighing up to 20 pounds each.
They can:

• Draw or stow an item as part of the same action once per turn
• Hold tools or components
• Assist with tasks requiring a free hand (such as reloading, using thieves’ tools, or spellcasting somatic components)

They cannot make weapon attacks or benefit from shields.

Integrated Construction

The sub‑arms cannot be disarmed or removed without dismantling your body. Deploying or retracting them requires no action.