In Brazil, Arena and Mana Crypt cards were inserted inside the first two books, so it was not necessary to send back any coupon, the same applies for Italian and Spanish cards
But there are a large number of those in BLB, which makes me believe that this card is really good
But this effect is so weak in the landscape of modern MTG design
This style is a direct throwback to Throne of Eldraine, which not only introduced Storybook card treatment, but also introduced Showcase cards in general
Considering different MTG players will find different things confusing and complex, this is a very hard question to answer
We as the Magic community need to hash out the causes and effects of counterfeits, as well as the morality of using such cards in events sanctioned or otherwise