They are designed to create a luxury market that, and in effect, helps keep the price of regular cards lower for the average player
Its probably strongest in Simic, Izzet, and the non-white, non-black shards and wedges, as youre less likely to be able to protect your permanents from battlefield sweepers
Set out from The Shire with Bilbo, Gandalf, and their company of Dwarves in pursuit of fortune, adventure, and the dreadful Dragon Smaug
While the ability to dig through your deck via this wheel-like effect is nice, Kayla then allows you to play a one-mana artifact, a two-mana artifact, and a three-mana artifact from among the discarded cards without paying their mana costs
#2 - Miscut into a filler: Similar to sheet edge miscuts, miscut cards adjacent to fillers might not show a 2nd card even though they otherwise would