I was always under the impression that this was a very well known error card but not very popular compared to others, i picked up a few for next to nothing a few years a go on ebay just for fun as they were usually not very hard to come across albeit not listed as the error
This list is the cream of the crop thats not already in the top 74: Abstruse Appropriation Accursed Marauder Amphibian Downpour Argent Dais Arna Kennerd, Skycaptain Branching Evolution Breya, Etherium Shaper Crabomination Dreamtide Whale Emperor of Bones Estrid's Invocation Genku, Future Shaper Glimpse the Impossible Grim Servant Kaalia of the Vast Kudo, King Among Bears Monstrous Vortex Nesting Grounds Pearl-Ear, Imperial Advisor Phelia, Exuberant Shepherd Powerbalance Rosheen, Roaring Prophet Sevinne's Reclamation Shadow of the Second Sun Shilgengar, Sire of Famine Solar Transformer Sowing Mycospawn The Necrobloom Thraben Charm Volatile Stormdrake Wheel of Potential Wight of the Reliquary #74
In fact, I highly recommend it
Deck requirements are needed to be considered before jamming United Battlefront into a deck
Still, Arena prizes were hard-won, and earning one of these unique blends of past and present Magic was a great boost to your collection if you could manage it
