| Mentor of the MeekCore Set 2019 · 27 | Core Set 2019 | 27 | Rare | €0.21 |
| Mentor of the MeekMarch of the Machine Commander · 196 | March of the Machine Commander | 196 | Rare | €0.18 |
| Mentor of the MeekPhyrexia: All Will Be One Commander · 81 | Phyrexia: All Will Be One Commander | 81 | Rare | €0.23 |
| Mentor of the MeekCore Set 2019 Promos · 27s | Core Set 2019 Promos | 27s | Rare | $0.98 |
| Mentor of the MeekStarter Commander Decks · 28 | Starter Commander Decks | 28 | Rare | $0.16 |
| Mentor of the MeekCrimson Vow Commander · 93 | Crimson Vow Commander | 93 | Rare | €0.09 |
| Mentor of the MeekThe Hobbit Eternal · 170 | The Hobbit Eternal | 170 | Rare | €1.98 |
| Mephidross VampireFifth Dawn · 53 | Fifth Dawn | 53 | Rare | €1.22 |
| Mephidross VampireSpecial Guests · 4 | Special Guests | 4 | Rare | €1.39 |
| Mephitic OozeDarksteel · 47 | Darksteel | 47 | Rare | €0.22 |
| Mercadian AtlasMercadian Masques · 305 | Mercadian Masques | 305 | Rare | €0.57 |
| Mercadian LiftMercadian Masques · 306 | Mercadian Masques | 306 | Rare | €0.44 |
| MercenariesIce Age · 44 | Ice Age | 44 | Rare | $0.57 |
| Mercenary InformerProphecy · 15 | Prophecy | 15 | Rare | €0.36 |
| Mercenary KnightPortal · 99 | Portal | 99 | Rare | €2.38 |
| Merchant of TruthMurders at Karlov Manor Commander · 11 | Murders at Karlov Manor Commander | 11 | Rare | €0.50 |
| Merchant of TruthMurders at Karlov Manor Commander · 322 | Murders at Karlov Manor Commander | 322 | Rare | €0.58 |
| Merchant of TruthFoundations Commander · 39 | Foundations Commander | 39 | Rare | €0.24 |
| Merchant of VenomSecrets of Strixhaven Commander · 27 | Secrets of Strixhaven Commander | 27 | Rare | $0.23 |
| Merchant of VenomSecrets of Strixhaven Commander · 76 | Secrets of Strixhaven Commander | 76 | Rare | €0.24 |
| Merchant ScrollJudge Gift Cards 2018 · 1 | Judge Gift Cards 2018 | 1 | Rare | €27.26 |
| Merchant ScrollMagic Online Promos · 68055 | Magic Online Promos | 68055 | Rare | — |
| Merchant ScrollSecret Lair Drop Tokens · 2824 | Secret Lair Drop Tokens | 2824 | Rare | $5.35 |
| Merchant's DockhandAether Revolt · 163 | Aether Revolt | 163 | Rare | $0.11 |
| Merchant's DockhandAether Revolt Promos · 163s | Aether Revolt Promos | 163s | Rare | €0.33 |
| Merchant's DockhandKaladesh Remastered · 250 | Kaladesh Remastered | 250 | Rare | — |
| Merciless EvictionDouble Masters · 211 | Double Masters | 211 | Rare | €0.47 |
| Merciless EvictionCommander 2016 · 211 | Commander 2016 | 211 | Rare | €0.73 |
| Merciless EvictionCommander 2017 · 179 | Commander 2017 | 179 | Rare | €0.26 |
| Merciless EvictionCommander Anthology Volume II · 160 | Commander Anthology Volume II | 160 | Rare | €0.51 |
| Merciless EvictionDominaria United Commander · 160 | Dominaria United Commander | 160 | Rare | €0.30 |
| Merciless EvictionGatecrash · 177 | Gatecrash | 177 | Rare | €0.53 |
| Merciless EvictionPhyrexia: All Will Be One Commander · 120 | Phyrexia: All Will Be One Commander | 120 | Rare | €0.42 |
| Merciless ExecutionerSecret Lair Drop Tokens · 1025 | Secret Lair Drop Tokens | 1025 | Rare | $10.59 |
| Mercurial ChemisterCommander 2017 · 180 | Commander 2017 | 180 | Rare | €0.20 |
| Mercurial ChemisterCommander 2020 · 221 | Commander 2020 | 221 | Rare | €0.13 |
| Mercurial ChemisterReturn to Ravnica · 180 | Return to Ravnica | 180 | Rare | €0.15 |
| Mercurial ChemisterThe List Tokens · RTR-180 | The List Tokens | RTR-180 | Rare | $0.14 |
| Mercurial PretenderMagic 2015 · 68 | Magic 2015 | 68 | Rare | $0.16 |
| Mercurial PretenderMagic 2015 Promos · 68 | Magic 2015 Promos | 68 | Rare | $0.23 |
| Mercurial PretenderMagic Online Promos · 53826 | Magic Online Promos | 53826 | Rare | — |
| Mercurial SpelldancerPhyrexia: All Will Be One · 61 | Phyrexia: All Will Be One | 61 | Rare | $0.33 |
| Mercurial SpelldancerPhyrexia: All Will Be One · 381 | Phyrexia: All Will Be One | 381 | Rare | $0.41 |
| Mercurial SpelldancerPhyrexia: All Will Be One Promos · 61p | Phyrexia: All Will Be One Promos | 61p | Rare | €0.57 |
| Mercurial SpelldancerPhyrexia: All Will Be One Promos · 61s | Phyrexia: All Will Be One Promos | 61s | Rare | $0.77 |
| Meren of Clan Nel TothCommander Masters · 346 | Commander Masters | 346 | Rare | €2.14 |
| Meren of Clan Nel TothCommander Masters · 584 | Commander Masters | 584 | Rare | €14.10 |
| Meren of Clan Nel TothCommander Masters · 685 | Commander Masters | 685 | Rare | €3.00 |
| Meren of Clan Nel TothLegendary Cube Prize Pack · 113 | Legendary Cube Prize Pack | 113 | Rare | — |
| Merfolk MesmeristURL/Convention Promos · 4 | URL/Convention Promos | 4 | Rare | €0.29 |