Create Construct Familiar

You conjure a spirit to inhabit a mechanical body of an animal form : bat, cat, hawk, lizard,  owl, poisonous snake, rat, raven, spider, or weasel (sea creatures excluded due to rust). The familiar cannot be any larger than a tiny sized creature utilizing the statistics of the creature it emulates. The body is created while casting the spell as long as the required material components are available.  If using an arcane focus then only the copper, iron, silver and animal components are required.

Your construct familiar is autonomous acting independently of you, but it always carries out the creators commands . While in combat, it is treated as an independent combatant. The construct will only attack when commanded to do so.

When the construct drops to 0 hit points, it is destroyed, leaving behind a ruin of parts. It will only reappear after the spell is recast.

Similar to a regular familiar, when it is within 120 feet of you, you can communicate with it telepathically. Also, as an action, you can see through your familiar's eyes and hear what it hears until the start of the next turn, gaining the benefits of any special senses that the familiar has. During this time, the caster is deaf and blind until the connection ends.

As an action, you can temporarily dismiss your familiar. The construct familiar shrinks into a small 3 inch cube with 1 hit point until summoned. While it is temporarily dismissed, it can only be summoned within a 5 foot space around you.  Alternatively, the construct can be deactivated forever but turning the body into a pile of metal dust in the process.

You can't have more than one construct familiar at a time. If you cast this spell while you already have a familiar, the old familiar will become a pile of parts.

Construct familiars cannot deliver spells as a normal familiar, but the spell can be placed inside a spell compartment to be delivered.  The spell must be cast while the creature is next to you.  The spell will remain in the construct until released.  To have the spell work, the familiar must be within 120 feet of its creator.  If the spell requires an attack roll, use the caster's attack modifier for the roll.