| Interdisciplinary MascotMarch of the Machine · 326 | March of the Machine | 326 | Rare | €0.24 |
| Interdisciplinary MascotMarch of the Machine · 377 | March of the Machine | 377 | Rare | €0.30 |
| Intermediate ChirographySecrets of Strixhaven Commander · 26 | Secrets of Strixhaven Commander | 26 | Rare | €0.18 |
| Interplanar BrushwaggMystery Booster Playtest Cards 2019 · 79 | Mystery Booster Playtest Cards 2019 | 79 | Rare | €0.02 |
| Interplanar BrushwaggMystery Booster Playtest Cards 2021 · 79 | Mystery Booster Playtest Cards 2021 | 79 | Rare | €0.28 |
| Intervention PactFuture Sight · 8 | Future Sight | 8 | Rare | €2.16 |
| Intet, the DreamerDouble Masters 2022 · 229 | Double Masters 2022 | 229 | Rare | €0.22 |
| Intet, the DreamerDouble Masters 2022 · 507 | Double Masters 2022 | 507 | Rare | €2.02 |
| Intet, the DreamerCommander 2017 · 174 | Commander 2017 | 174 | Rare | €0.15 |
| Intet, the DreamerCommander 2011 · 204 | Commander 2011 | 204 | Rare | €0.31 |
| Intet, the DreamerCommander 2011 Oversized · 204 | Commander 2011 Oversized | 204 | Rare | €0.36 |
| Intet, the DreamerPlanar Chaos · 158 | Planar Chaos | 158 | Rare | €0.34 |
| In the Darkness Bind ThemTales of Middle-earth Commander · 58 | Tales of Middle-earth Commander | 58 | Rare | €0.99 |
| In the Darkness Bind ThemTales of Middle-earth Commander · 465 | Tales of Middle-earth Commander | 465 | Rare | €10.44 |
| In the Eye of ChaosLegends · 61 | Legends | 61 | Rare | €92.11 |
| In the Eye of ChaosMasters Edition IV · 51 | Masters Edition IV | 51 | Rare | — |
| In the Web of WarBetrayers of Kamigawa · 108 | Betrayers of Kamigawa | 108 | Rare | €0.42 |
| In the Web of WarThe List Tokens · BOK-108 | The List Tokens | BOK-108 | Rare | €0.08 |
| Inti, Seneschal of the SunThe Lost Caverns of Ixalan · 156 | The Lost Caverns of Ixalan | 156 | Rare | $1.15 |
| Inti, Seneschal of the SunThe Lost Caverns of Ixalan · 295 | The Lost Caverns of Ixalan | 295 | Rare | €1.39 |
| Inti, Seneschal of the SunThe Lost Caverns of Ixalan Promos · 156p | The Lost Caverns of Ixalan Promos | 156p | Rare | €1.45 |
| Inti, Seneschal of the SunThe Lost Caverns of Ixalan Promos · 156s | The Lost Caverns of Ixalan Promos | 156s | Rare | €2.24 |
| Inti, Seneschal of the SunPlaneswalker Championship Promos · 2025-4 | Planeswalker Championship Promos | 2025-4 | Rare | €2.90 |
| In Too DeepNew Capenna Commander · 27 | New Capenna Commander | 27 | Rare | €0.33 |
| In Too DeepNew Capenna Commander · 128 | New Capenna Commander | 128 | Rare | €0.60 |
| In Too DeepNew Capenna Commander Promos · 27p | New Capenna Commander Promos | 27p | Rare | €3.54 |
| In Too DeepMagic Online Promos · 99963 | Magic Online Promos | 99963 | Rare | — |
| Into the FireMarch of the Machine · 144 | March of the Machine | 144 | Rare | €0.31 |
| Into the FireMarch of the Machine · 364 | March of the Machine | 364 | Rare | €0.30 |
| Into the FireMarch of the Machine Promos · 144p | March of the Machine Promos | 144p | Rare | €0.18 |
| Into the FireMarch of the Machine Promos · 144s | March of the Machine Promos | 144s | Rare | $0.40 |
| Into the Flood MawWizards Play Network 2026 · 8 | Wizards Play Network 2026 | 8 | Rare | €1.83 |
| Into the Flood MawPlaneswalker Championship Promos · 2026-2 | Planeswalker Championship Promos | 2026-2 | Rare | €9.03 |
| Into the PitDuskmourn: House of Horror Commander · 20 | Duskmourn: House of Horror Commander | 20 | Rare | $0.29 |
| Into the PitDuskmourn: House of Horror Commander · 50 | Duskmourn: House of Horror Commander | 50 | Rare | €0.02 |
| Into the Time VortexMarvel Super Heroes Commander · 165 | Marvel Super Heroes Commander | 165 | Rare | €0.20 |
| Into the Time VortexDoctor Who · 88 | Doctor Who | 88 | Rare | $0.33 |
| Into the Time VortexDoctor Who · 387 | Doctor Who | 387 | Rare | €1.03 |
| Into the Time VortexDoctor Who · 693 | Doctor Who | 693 | Rare | €5.36 |
| Into the Time VortexDoctor Who · 978 | Doctor Who | 978 | Rare | €1.88 |
| Into the Time VortexMarvel Super Heroes Commander · 363 | Marvel Super Heroes Commander | 363 | Rare | $0.48 |
| Into the WildsMagic 2014 · 180 | Magic 2014 | 180 | Rare | $0.38 |
| Intrepid HeroSeventh Edition · 22 | Seventh Edition | 22 | Rare | €1.36 |
| Intrepid HeroSeventh Edition · 22★ | Seventh Edition | 22★ | Rare | $2.26 |
| Intrepid HeroEighth Edition · 26 | Eighth Edition | 26 | Rare | $0.88 |
| Intrepid HeroEighth Edition · 26★ | Eighth Edition | 26★ | Rare | $0.88 |
| Intrepid HeroMagic 2013 · 20 | Magic 2013 | 20 | Rare | €1.02 |
| Intrepid HeroUrza's Saga · 19 | Urza's Saga | 19 | Rare | €1.57 |
| Intrepid HeroWorld Championship Decks 2002 Tokens · bk22sb | World Championship Decks 2002 Tokens | bk22sb | Rare | €1.38 |
| Intrepid PaleontologistThe Lost Caverns of Ixalan · 193 | The Lost Caverns of Ixalan | 193 | Rare | €0.33 |