Enchanter

You have spent quite a bit of time infusing items with magic, this has gained you access to the following:

• You can enchant magical items faster than other people would be able to. Instead of crafting at a speed of 25gp per day (3.125gp per hour) you craft at a speed of your Character Level + Intelligence Bonus Modifier.
• Your intimate knowledge of Magical Items allows you to attune to one more Magic Item than others would be able to. (Raising the Cap for normal classes to 4 and for the Artificer to 7)
• You can proficiency in Arcana, or Expertise if you are already proficient in it.

Technical Limitations:

• This Feat is made under the assumption of non-Artificers taking it. It will cause issues as it sets the Attuned Items to 4 and overrides the Class Features that would usually add. For an Artificer there needs to be a Feat at levels 10, 14 and 18, to add one more attunement slot each time.
• If you were proficient in Arcana selecting this Feat will not automatically put it to Expertise. You'll need to manually override it.