In summer 2018 Oath Playing Cards did a small print run mainly to test the use of UV inks on two-color pearlescent stock. They also played around with the varnish a bit, experimenting with new materials. These sheets remained in the printer's facility and were forgotten until Lotrek decided to cut them.
This is a relatively rare case where the "test" version of the deck actually ended up being more luxurious than the "official" decks due to the pearlescent stock. Moreover, there was only 200 of these decks created, each of which is hand numbered.