| Kutzil's FlankerThe Lost Caverns of Ixalan Promos · 20p | The Lost Caverns of Ixalan Promos | 20p | Rare | $0.48 |
| Kutzil's FlankerThe Lost Caverns of Ixalan Promos · 20s | The Lost Caverns of Ixalan Promos | 20s | Rare | $0.61 |
| Kwain, Itinerant MeddlerBloomburrow Commander · 90 | Bloomburrow Commander | 90 | Rare | €1.63 |
| Kwain, Itinerant MeddlerBloomburrow Commander · 254 | Bloomburrow Commander | 254 | Rare | €0.31 |
| Kwain, Itinerant MeddlerCommander Legends · 284 | Commander Legends | 284 | Rare | €0.27 |
| Kwain, Itinerant MeddlerCommander Legends · 604 | Commander Legends | 604 | Rare | €0.22 |
| Kwain, Itinerant MeddlerYear of the Rabbit 2023 Tokens · 3 | Year of the Rabbit 2023 Tokens | 3 | Rare | €10.90 |
| Kwain, Itinerant MeddlerThe List Tokens · CMR-284 | The List Tokens | CMR-284 | Rare | €0.20 |
| Kwain, Itinerant MeddlerMagic Online Promos · 86312 | Magic Online Promos | 86312 | Rare | — |
| Kwende, Pride of FemerefDominaria · 25 | Dominaria | 25 | Uncommon | €0.10 |
| Kwende, Pride of FemerefJumpstart 2022 · 205 | Jumpstart 2022 | 205 | Uncommon | €0.17 |
| Kwende, Pride of FemerefMultiverse Legends · 5 | Multiverse Legends | 5 | Uncommon | €0.05 |
| Kwende, Pride of FemerefMultiverse Legends · 70 | Multiverse Legends | 70 | Uncommon | €0.23 |
| Kwende, Pride of FemerefMultiverse Legends · 135 | Multiverse Legends | 135 | Uncommon | €0.23 |
| Kwende, Pride of FemerefMultiverse Legends · 135z | Multiverse Legends | 135z | Uncommon | €173.78 |
| Kwende, Pride of FemerefDominaria Promos · 25s | Dominaria Promos | 25s | Uncommon | €0.36 |
| Kwia VigorbloomReality Fracture · 140 | Reality Fracture | 140 | Mythic Rare | $4.26 |
| Kwia VigorbloomReality Fracture · 352 | Reality Fracture | 352 | Mythic Rare | €5.27 |
| Kwia VigorbloomReality Fracture · 410 | Reality Fracture | 410 | Mythic Rare | €18.94 |
| Kwia VigorbloomReality Fracture · 420 | Reality Fracture | 420 | Mythic Rare | €126.95 |
| Kwia VigorbloomReality Fracture Promos · 140p | Reality Fracture Promos | 140p | Mythic Rare | €4.36 |
| Kydele, Chosen of KruphixCommander 2016 · 35 | Commander 2016 | 35 | Mythic Rare | €2.43 |
| Kydele, Chosen of KruphixCommander Legends · 524 | Commander Legends | 524 | Mythic Rare | €1.56 |
| Kydele, Chosen of KruphixTreasure Chest · 53 | Treasure Chest | 53 | Mythic Rare | — |
| Kydele, Chosen of KruphixMagic Online Promos · 86164 | Magic Online Promos | 86164 | Mythic Rare | — |
| Kykar, Wind's FuryBloomburrow Commander · 91 | Bloomburrow Commander | 91 | Mythic Rare | $6.22 |
| Kykar, Wind's FuryCommander Masters · 343 | Commander Masters | 343 | Rare | $0.50 |
| Kykar, Wind's FuryCommander Masters · 582 | Commander Masters | 582 | Rare | €1.42 |
| Kykar, Wind's FuryCommander Masters · 683 | Commander Masters | 683 | Rare | €0.70 |
| Kykar, Wind's FuryCore Set 2020 · 212 | Core Set 2020 | 212 | Mythic Rare | $0.85 |
| Kykar, Wind's FuryMarch of the Machine Commander · 334 | March of the Machine Commander | 334 | Mythic Rare | €0.71 |
| Kykar, Wind's FuryCore Set 2020 Promos · 212p | Core Set 2020 Promos | 212p | Mythic Rare | $1.40 |
| Kykar, Wind's FuryCore Set 2020 Promos · 212s | Core Set 2020 Promos | 212s | Mythic Rare | €3.31 |
| Kykar, Zephyr AwakenerFoundations · 122 | Foundations | 122 | Rare | €0.30 |
| Kykar, Zephyr AwakenerFoundations · 348 | Foundations | 348 | Rare | $0.61 |
| Kykar, Zephyr AwakenerFoundations · 409 | Foundations | 409 | Rare | €13.06 |
| Kykar, Zephyr AwakenerFoundations · 481 | Foundations | 481 | Rare | $0.46 |
| Kykar, Zephyr AwakenerFoundations Promos · 122p | Foundations Promos | 122p | Rare | $0.33 |
| Kykar, Zephyr AwakenerFoundations Promos · 122s | Foundations Promos | 122s | Rare | $1.11 |
| Kykar, Zephyr Awakener // Kykar, Zephyr AwakenerFoundations Art Series · 16 | Foundations Art Series | 16 | — | — |
| Kylem All-StarUnknown Event · RW04b | Unknown Event | RW04b | Rare | $43.00 |
| Kyler, Sigardian EmissaryMidnight Hunt Commander · 4 | Midnight Hunt Commander | 4 | Mythic Rare | $0.51 |
| Kyler, Sigardian EmissaryMidnight Hunt Commander · 42 | Midnight Hunt Commander | 42 | Mythic Rare | €1.61 |
| Kyler, Sigardian EmissaryMagic Online Promos · 94056 | Magic Online Promos | 94056 | Rare | — |
| Kylox's VoltstriderMurders at Karlov Manor · 215 | Murders at Karlov Manor | 215 | Mythic Rare | €0.17 |
| Kylox's VoltstriderMurders at Karlov Manor · 417 | Murders at Karlov Manor | 417 | Mythic Rare | $0.26 |
| Kylox's VoltstriderMurders at Karlov Manor Promos · 215p | Murders at Karlov Manor Promos | 215p | Mythic Rare | €0.03 |
| Kylox's VoltstriderMurders at Karlov Manor Promos · 215s | Murders at Karlov Manor Promos | 215s | Mythic Rare | €0.02 |
| Kylox, Visionary InventorMurders at Karlov Manor · 214 | Murders at Karlov Manor | 214 | Rare | €0.08 |
| Kylox, Visionary InventorMurders at Karlov Manor · 365 | Murders at Karlov Manor | 365 | Rare | €0.08 |