Innovator's Upgrade
Prerequisite: KibbleTasty's Inventor
You've honed your mind into a nonstop analytical machine. You can select an additional upgrade from your subclass list. You can select this feat multiple times, selecting a different upgrade each time.
Golemsmith's Proficiency
When you choose this specialization at 1st level, you gain proficiency with smith's tools and tinker's tools.
Mechanical Golem
Starting at 1st level, you forge a mechanical golem to carry out your orders and protect you. The golem is under your control, and understands the languages you speak, but does not speak.
The Golem obeys your commands as best it can. On your turn, you can verbally command the construct where to move (no action required by you) and take an action, which requires your action to do. Additionally, you can use your reaction to direct it to take a reaction. The Golem acts on your commands during your turn. If you issue no command to your Golem, it takes no actions.
Your Golem's Proficiency increases when yours does. If the golem is killed, it can be returned to life via normal means, such as with the revivify spell.
In addition, over the course of a long rest, you can repair a slain servant if you have access to its body. It returns to life with half (rounded down) its maximum hit point at the end of the rest during which you repaired it. If the servant is beyond recovery, you can reproduce the construct exactly as it was, with four days of work (eight hours each day) and 100 gp of raw materials.
Over the course of a short rest, you can restore hit points equal to your Intelligence modifier + your Inventor level to your golem, or repair it to full health during a long rest. Healing spells you cast on your golem ignore any restriction against healing constructs.
https://www.worldanvil.com/sheet/1285462/view
Magic Item Analysis
Starting at 1st level, your understanding of magic items allows you to analyze and understand their secrets. You know the Inventor spells detect magic and identify, and you can cast them as rituals without material components.
Quadrupedal
Your golem takes on a quadrupedal design. Larger and more sturdy, it is more suitable to launch into the fray or carry its creator. Its base size becomes Large, its base Strength and Constitution become 16(+3), its natural armor becomes 16, and its speed becomes 35 ft.
Its natural weapon is: Bite: +5 (Strength + Proficiency) to hit, reach 5ft., one target. Hit 1d10 + 3 (Strength) piercing damage.
Fighting Style: Defence, +1 to AC
Intelligent Oversight
Starting at 3rd level, you can take the Help action as a bonus action when assisting your golem.
Additionally, when you take the Help action to aid an ally (including your golem) in attacking a creature, the target of that attack can be within 30 feet of you, rather than 5 feet of you, if the allied creature can see or hear you.
Autonomous Action
Starting at 5th level, you no longer need to spend your action or reaction to direct the golem to use its action or reaction, and it can act following mental commands communicated while it is within 60 feet of you.
If the Golem is not directed to take any action, it will take the Dodge action in combat.
Magical Nature
Additionally at 5th level, your golem's natural weapons count as magical for the purposes of overcoming resistance and immunity to nonmagical attacks and damage.
Magic Initiate
Mending
Fire Bolt
Catapult
Crusher
TCE
p79
You are practiced in the art of crushing your enemies, granting you the following benefits:
Increase your Strength or Constitution by 1, to a maximum of 20.
Once per turn, when you hit a creature with an attack that deals bludgeoning damage, you can move it 5 feet to an unoccupied space, provided the target is no more than one size larger than you.
When you score a critical hit that deals bludgeoning damage to a creature, attack rolls against that creature are made with advantage until the start of your next turn.
Tough
PHB
p170
Your hit point maximum increases by an amount equal to twice your level when you gain this feat. Whenever you gain a level thereafter, your hit point maximum increases by an additional 2 hit points.