The Tinkerer

You have made a pact with a Cosmic Tinkerer, be it a god like Hephaestus, or some other powerful magic tinkerer, maybe even an overpowered artificer.  This being uses pawns such as you to put its creations into the world, no matter their effects. They aim to create, even if you have to destroy for them to do so.

Your eldritch invocations are flavored to your liking as devices you have created for your patron.

Expanded Spell List

At first level you gain access to the Artificer spell list in addition to the normal Warlock spell list.

Eldritch Blaster

Your patron enables you to build a hand cannon capable of firing a blast of energy.

You gain the eldritch blast cantrip without it counting against your known cantrips. Any eldritch invocations that affect eldritch blast are flavored to your liking as modifications to your hand cannon.

Empowered Cannon

Your Eldritch Blasts from your hand cannon now deal 2d10 instead of 1.

Arcane Blasts

Your Eldritch blast can now to 1d10 of force and 1d10 of any other type of magical damage of your choice.

Hand Rifle

Your hand cannon becomes a Hand Rifle. Your eldritch blast's range is now increased by 500 feet.