The iconic dealer with devils is Faust, whose legend spawned multiple works of literature in the Western canon, but the idea has filtered down to The Twilight Zone, The Simpsons , country music, and many other works

Bot Aang, Air Nomad Abomination of Llanowar Abu Ja'far Abyssal Nocturnus Abyssal Specter Academy Raider Access Tunnel Accursed Spirit Achilles Davenport Adrestia Aegis Angel Aeronaut Tinkerer Aether Tunnel Agent of Horizons Agents of HYDRA Agility Bobblehead Air Elemental Air Servant Akawalli, the Seething Tower Akroan Line Breaker Alley Strangler Alora, Merry Thief Alpha Authority Amphin Pathmage Amrou Kithkin Amrou Seekers Anaconda Angel of Mercy Angelic Blessing Angelic Guardian Angelic Intervention Angelic Page Animus of Night's Reach Ant-Man's Air Force Ant-Man, Elusive Avenger Ant-Man, Reformed Rogue Antique Collector Anurid Murkdiver Aphotic Wisps Apocalypse Runner Apostle of Purifying Light Appa, Aang's Companion April O'Neil, Kunoichi Trainee Aquatic Incursion Aqueous Form Aradara Express Arcbound Fiend Archon of Absolution Arctic Foxes Argothian Pixies Argothian Sprite Arlinn's Wolf Armed Assailant Armory Veteran Arnim Zola, Bio-Fanatic Aron, Benalia's Ruin Artful Dodge Artifact Ward Ascendant Evincar Ashiok's Skulker Aspiring Aeronaut Assassin Den Atarka Pummeler Atomic Microsizer Audacious Infiltrator Avatar Kuruk Avatar of Hope Avatar of Woe Aven Battle Priest Aven Cloudchaser Aven Fisher
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Tranquil Thicket is at its best in something like Slogurk, the Overslime or The Gitrog Monster (i.e., commanders that care about lands going to the yard), but is hardly limited to those
I think making it even just a bit cheaper wouldve been an amazing way to use this sets crossover to introduce Magic players to D&D, or vice versa
Some want collector hits