The item cards set will consist of the following.
Addons have been removed out of the game in the pursuit of simplicity. Artifacts (from Delve) already fits the concept addons were aiming for. Probably in the future, I will work on a standalone appendix with magic items that would fill the need for these kinds of items.
If you have any kind of feedback, even if it just a minor minutia, please don't hesitate in sharing it.
Thank you all for your support.
Update: Changes applied as per the recent poll.