Your Constitution score increases by 2, and one other ability score of your choice increases by 1.

Your base walking speed is 30 feet.

• With the removal of most of your flesh, you have resistance to necrotic damage.
• You don’t need to drink water to survive. Your body requires an oil adjacent liquid to be imbibed once daily to keep yourself running smoothly.
• You don't need to sleep, and magic can't put your mechanized parts to sleep.

When you take a long rest, you must spend at least four hours in an inactive state. In this state, you appear inert and are functionally sleeping.  However, your mechanized half continues to run, capturing environmental stimuli as normal. This data can be reviewed upon waking.

You can don armor with which you have proficiency. To don armor, you must incorporate it into your body over the course of 1 hour, during which you must remain in contact with the armor. To doff armor, you must spend 1 hour removing it. You can rest while donning or doffing armor in this way.

While you live, your armor can't be removed from your body against your will.

You can speak, read, and write Common and one other language of your choice.

Chassis: Your base movement speed is 40 ft.

On your turn, you can activate overclock as a bonus action.

While in overclock, the user takes 1d4 damage per turn, equal to proficiency bonus. The user's speed is doubled, has advantage on dexterity saving throws, and does not provoke opportunity attacks.

Overclock can stay active indefinitely. It ends early if you are knocked unconscious. You can also end overclock on your turn as a bonus action.

Once you have overclocked the maximum number of times for your level, you must finish a long rest to regain the used charges. Alternatively, you can choose to use additional charges of overclock at the cost of an exhaustion point. You may overclock 1 time at 1st level, 2 at 5th, 3 at 11th, and 4 at 17th.

Chassis: When you aren't wearing armor, your base AC is 13 + Dexterity modifier. You can use your natural armor to determine your AC if the armor you wear would leave you with a lower AC. A shield's benefits apply as normal while you use your natural armor.

On your turn, you can activate overclock as a bonus action.

While in overclock, the user takes 1d4 damage per turn, equal to proficiency bonus. On taking damage, you can use a reaction to spew caustic blood onto the enemy that attacked you within 5 ft. The creature must make a DC 13 dexterity saving throw. Caustic blood does 1d6 acid damage per hit, increasing with proficiency bonus on a failed save, or half as much on a successful one.

Overclock can stay active indefinitely. It ends early if you are knocked unconscious. You can also end overclock on your turn as a bonus action.

Once you have overclocked the maximum number of times for your level, you must finish a long rest to regain the used charges. Alternatively, you can choose to use additional charges of overclock at the cost of an exhaustion point. You may overclock 1 time at 1st level, 2 at 5th, 3 at 11th, and 4 at 17th.

Chassis: Your base movement speed is 20 ft. You have proficiency with heavy armor.

On your turn, you can activate overclock as a bonus action.

While in overclock, the user takes 1d4 damage per turn, equal to proficiency bonus. You gain multi-attack.

Overclock can stay active indefinitely. It ends early if you are knocked unconscious. You can also end overclock on your turn as a bonus action.

Once you have overclocked the maximum number of times for your level, you must finish a long rest to regain the used charges. Alternatively, you can choose to use additional charges of overclock at the cost of an exhaustion point. You may overclock 1 time at 1st level, 2 at 5th, 3 at 11th, and 4 at 17th.