| Mannadium MeekCyberstorm Access · 014 | Cyberstorm Access | 014 | Super Rare | $0.23 |
| Mannadium Prime-HeartCyberstorm Access · 043 | Cyberstorm Access | 043 | Ultra Rare | €0.25 |
| Mannadium ReframingCyberstorm Access · 073 | Cyberstorm Access | 073 | Common | €0.07 |
| Mannadium RiumheartCyberstorm Access · 012 | Cyberstorm Access | 012 | Ultra Rare | €0.73 |
| Mannadium TorridDuelist Nexus · 011 | Duelist Nexus | 011 | Super Rare | €0.09 |
| Mannadium TrisuktaAge of Overlord · 037 | Age of Overlord | 037 | Ultra Rare | €0.59 |
| Mansion of the Dreadful DollsThe Infinite Forbidden · 056 | The Infinite Forbidden | 056 | Common | €0.04 |
| Man-Thro' Tro'Ancient Sanctuary · 081 | Ancient Sanctuary | 081 | Short Print | $0.18 |
| Manticore of DarknessInvasion of Chaos · 067 | Invasion of Chaos | 067 | Ultra Rare | €0.34 |
| Manticore of SmashingPhoton Hypernova · 022 | Photon Hypernova | 022 | Common | €0.07 |
| Mantman the UltrahumanRage of the Abyss · 084 | Rage of the Abyss | 084 | Common | €0.02 |
| Maple MaidenBattle of Chaos · 042 | Battle of Chaos | 042 | Common | €0.08 |
| Mara of the Nordic AlfarExtreme Victory · 083 | Extreme Victory | 083 | Ultra Rare | €0.19 |
| Marauding CaptainLegacy of Darkness · 018 | Legacy of Darkness | 018 | Ultra Rare | €0.03 |
| March of the Dark BrigadeCode of the Duelist · 059 | Code of the Duelist | 059 | Ultra Rare | $0.41 |
| March of the MonarchsCosmo Blazer · 064 | Cosmo Blazer | 064 | Common | €0.14 |
| March Towards RagnarokStorm of Ragnarok · 047 | Storm of Ragnarok | 047 | Rare | €0.05 |
| Mardel, Generaider Boss of LightMystic Fighters · 027 | Mystic Fighters | 027 | Secret Rare | €0.14 |
| Mare MareInvasion: Vengeance · 094 | Invasion: Vengeance | 094 | Common | €0.04 |
| Margin TradingDawn of Majesty · 069 | Dawn of Majesty | 069 | Common | €0.02 |
| Mariamne Paradox, the True Dracophoenix KnightDoom of Dimensions · 019 | Doom of Dimensions | 019 | Common | €0.06 |
| Mariamne, the True DracophoenixMaximum Crisis · 026 | Maximum Crisis | 026 | Ultra Rare | €0.04 |
| Marina, Princess of SunflowersShadow Specters · 040 | Shadow Specters | 040 | Super Rare | $0.01 |
| Marincess Aqua ArgonautLegendary Duelists: Duels From the Deep · 034 | Legendary Duelists: Duels From the Deep | 034 | Ultra Rare | $0.36 |
| Marincess BasilalimaEternity Code · 006 | Eternity Code | 006 | Common | €0.13 |
| Marincess Battle OceanRising Rampage Special Edition · 2 | Rising Rampage Special Edition | 2 | Super Rare | €0.04 |
| Marincess Blue SlugRising Rampage · 040 | Rising Rampage | 040 | Ultra Rare | €1.36 |
| Marincess Blue TangChaos Impact · 004 | Chaos Impact | 004 | Secret Rare | €0.05 |
| Marincess Bubble RingLegendary Duelists: Duels From the Deep · 037 | Legendary Duelists: Duels From the Deep | 037 | Rare | €0.05 |
| Marincess CascadeChaos Impact · 068 | Chaos Impact | 068 | Common | €0.07 |
| Marincess CirculationLegendary Duelists: Duels From the Deep · 036 | Legendary Duelists: Duels From the Deep | 036 | Rare | €0.05 |
| Marincess Coral AnemoneRising Rampage · 041 | Rising Rampage | 041 | Secret Rare | €0.21 |
| Marincess Coral TriangleLegendary Duelists: Duels From the Deep · 033 | Legendary Duelists: Duels From the Deep | 033 | Ultra Rare | $0.37 |
| Marincess Crown TailChaos Impact · 003 | Chaos Impact | 003 | Common | €0.05 |
| Marincess Crystal HeartChaos Impact · 040 | Chaos Impact | 040 | Super Rare | €0.04 |
| Marincess CurrentRising Rampage · 069 | Rising Rampage | 069 | Common | €0.08 |
| Marincess DiveLegendary Duelists: Duels From the Deep · 035 | Legendary Duelists: Duels From the Deep | 035 | Ultra Rare | €2.08 |
| Marincess Great Bubble ReefEternity Code · 054 | Eternity Code | 054 | Super Rare | €0.16 |
| Marincess MandarinChaos Impact · 002 | Chaos Impact | 002 | Rare | €0.12 |
| Marincess Marbled RockRising Rampage · 042 | Rising Rampage | 042 | Secret Rare | €0.05 |
| Marincess PascalusIgnition Assault · 093 | Ignition Assault | 093 | Super Rare | €0.07 |
| Marincess Sea AngelRising Rampage Special Edition · 4 | Rising Rampage Special Edition | 4 | Super Rare | €0.03 |
| Marincess Sea HorseRising Rampage · 003 | Rising Rampage | 003 | Ultra Rare | €0.04 |
| Marincess Sea StarRising Rampage · 004 | Rising Rampage | 004 | Common | €0.07 |
| Marincess Sleepy MaidenLegendary Duelists: Duels From the Deep · 032 | Legendary Duelists: Duels From the Deep | 032 | Rare | €0.08 |
| Marincess SnowChaos Impact · 067 | Chaos Impact | 067 | Common | €0.12 |
| Marincess SpringirlLegendary Duelists: Duels From the Deep · 031 | Legendary Duelists: Duels From the Deep | 031 | Super Rare | €0.63 |
| Marincess WaveRising Rampage · 068 | Rising Rampage | 068 | Ultra Rare | €0.02 |
| Marincess Wonder HeartRising Rampage Special Edition · 3 | Rising Rampage Special Edition | 3 | Super Rare | €0.04 |
| Marine BeastOTS Tournament Pack 4 · 022 | OTS Tournament Pack 4 | 022 | Short Print | €0.35 |