Magic Item Maker

The Magic Item Maker, instead of gaining new abilities, hones those already known to them. Their infusions known expand vastly as a result.

Replicator of Magic Items

At 3rd level, you can now imbue a large amount of mundane items with magic. You may choose Replicate Magic Item as an infusion a total of (half your Artificer level) times without it counting towards your total infusions known. 

Magic Item Efficency

At 3rd level, you now can infuse double the usual infusions, know double the usual infusions, and imbue multiple infusions onto a single items, 2 infusions per item at 3rd level, 3 at 6th level, 4 at 10th level, 5 at 14th level, and 6 at 18th level.

Magic Item Knowledge

At 5th level, you gain the ability to edit your infusions list during long rests. Once during a long rest, you may remove one Replicate Magic Item, and replace with another Replicate Magic Item. 

Magic Item Crafting

At 9th level, you unlock the secrets for crafting magic items. The amount of gold and time it takes to create common, uncommon, or rare magic items takes a quarter of the time and a quarter of the gold cost.

Permanent Magic Items

At 15th level, you have learned how to make your infused items permanent. Once per long rest, you may choose any of your infused items that are infused with Replicate Magic Item. You can then make it a magic item. It now functions as that magic item and no longer takes up an infusion slot.