Of course some basic lands have Non-English, single character names, and you might already play with some three-letter card names, Dub, Six, and Opt
However, it's still worth understanding how it worked, as it could help us piece the clues together quicker, should Wizards run a similar secret promo in future

Aang, A Lot to Learn Aang, Air Nomad Aang, Destined Savior Abbey Griffin Abomination of Llanowar Absorbing Man Abstruse Archaic Abzan Runemark Accorder's Shield Action News Crew Adaptive Sporesinger Adarkar Valkyrie Additive Evolution Adeline, Resplendent Cathar Adeline, Resplendent Cathar Aerial Responder Aether Inspector Aetherjacket Affa Protector Agent Phil Coulson Agrus Kos, Eternal Soldier Agrus Kos, Spirit of Justice Air Response Unit Ajani Fells the Godsire Ajani Goldmane Ajani Steadfast Ajani, Sleeper Agent Ajani, the Greathearted Akiri, Line-Slinger Akroan Phalanx Akroma's Devoted Akroma's Memorial Akroma's Will Akroma's Will Akroma, Angel of Wrath Akroma, Angel of Wrath Avatar Akroma, Vision of Ixidor Alabaster Kirin Alaborn Grenadier Alacrian Armory Alacrian Jaguar Alenni, Brood Recruiter Alert Heedbonder Alert Shu Infantry Alphinaud Leveilleur Alpine Watchdog Alquist Proft, Master Sleuth Always Watching Amazing Spider-Girl Amazing Spider-Man Anax and Cymede Anax and Cymede & Kynaios and Tiro (playtest) Ancient Adamantoise Angel of Condemnation Angel of Invention Angel of Light Angel of the Dawn Angel's Trumpet Angelfire Ignition Angelic Aberration Angelic Field Marshal Angelic Sell-Sword Angelic Skirmisher Animus of Predation Anointed Peacekeeper Ao, the Dawn Sky Aplan Mortarium Apothecary Stomper Apothecary White Appa, the Vigilant Appeal // Authority Appeal // Authority

1 Endless Ranks of the Dead