Mammoth Graveyard (LOB-EN009) (Legend of Blue Eyes White Dragon (25th Anniversary Edition))

Man Eater (LOB-EN075) (Legend of Blue Eyes White Dragon (25th Anniversary Edition))

Man-Eater Bug (LOB-EN108) (Legend of Blue Eyes White Dragon (25th Anniversary Edition))

Manga Ryu-Ran (SRL-EN071) (Spell Ruler (25th Anniversary Edition))

Manju of the Ten Thousand Hands (IOC-EN088) (Invasion of Chaos (25th Anniversary Edition))

Manticore of Darkness (IOC-EN067) (Invasion of Chaos (25th Anniversary Edition))

Masaki the Legendary Swordsman (LOB-EN038) (Legend of Blue Eyes White Dragon (25th Anniversary Edition))

Mask of Darkness (MRD-EN014) (Metal Raiders (25th Anniversary Edition))

Masked Sorcerer (MRD-EN019) (Metal Raiders (25th Anniversary Edition))

Mataza the Zapper (IOC-EN086) (Invasion of Chaos (25th Anniversary Edition))

McDonald's 25th Anniversary Booster Pack

Mechanical Snail (SRL-EN021) (Spell Ruler (25th Anniversary Edition))

Meda Bat (LOB-EN083) (Legend of Blue Eyes White Dragon (25th Anniversary Edition))

Mefist the Infernal General (DCR-EN066) (Dark Crisis (25th Anniversary Edition))

Mega Thunderball (MRD-EN044) (Metal Raiders (25th Anniversary Edition))

Megamorph (SRL-EN061) (Spell Ruler (25th Anniversary Edition))

Messenger of Peace (SRL-EN102) (Spell Ruler (25th Anniversary Edition))

Metal Detector (PSV-EN022) (Pharaoh's Servant (25th Anniversary Edition))

Metal Dragon (LOB-EN102) (Legend of Blue Eyes White Dragon (25th Anniversary Edition))

Metal Fish (SRL-EN007) (Spell Ruler (25th Anniversary Edition))

Metal Raiders Booster Box (25th Anniversary Edition)

Metal Raiders Booster Pack (25th Anniversary Edition)

Metallizing Parasite - Lunatite (DCR-EN074) (Dark Crisis (25th Anniversary Edition))