| Kasmina, Enigmatic MentorWar of the Spark · 56 | War of the Spark | 56 | Uncommon | €0.20 |
| Kasmina, Enigmatic MentorWar of the Spark · 56★ | War of the Spark | 56★ | Uncommon | €0.77 |
| Kasmina, Enigmatic MentorMagic Online Promos · 72253 | Magic Online Promos | 72253 | Uncommon | — |
| Kasmina, Enigmatic MentorMagic Online Promos · 77987 | Magic Online Promos | 77987 | Uncommon | — |
| Kasmina's TransmutationDouble Masters 2022 · 54 | Double Masters 2022 | 54 | Common | €0.13 |
| Kasmina's TransmutationRavnica Remastered · 46 | Ravnica Remastered | 46 | Common | €0.10 |
| Kasmina's TransmutationWar of the Spark · 57 | War of the Spark | 57 | Common | €0.10 |
| Kassandra, Eagle BearerAssassin's Creed · 59 | Assassin's Creed | 59 | Mythic Rare | $2.24 |
| Kassandra, Eagle BearerAssassin's Creed · 148 | Assassin's Creed | 148 | Mythic Rare | $5.75 |
| Kassandra, Eagle BearerAssassin's Creed · 240 | Assassin's Creed | 240 | Mythic Rare | $6.93 |
| Kassandra, Eagle BearerAssassin's Creed · 271 | Assassin's Creed | 271 | Mythic Rare | $23.07 |
| Kassandra, Eagle Bearer // Kassandra, Eagle BearerAssassin's Creed Art Series · 6 | Assassin's Creed Art Series | 6 | — | — |
| Kastral, the WindcrestedBloomburrow · 221 | Bloomburrow | 221 | Rare | €0.33 |
| Kastral, the WindcrestedBloomburrow · 335 | Bloomburrow | 335 | Rare | €0.74 |
| Kastral, the WindcrestedBloomburrow · 350 | Bloomburrow | 350 | Rare | $108.60 |
| Kastral, the WindcrestedBloomburrow Promos · 221p | Bloomburrow Promos | 221p | Rare | €0.21 |
| Kastral, the WindcrestedBloomburrow Promos · 221s | Bloomburrow Promos | 221s | Rare | €0.73 |
| Katabatic WindsVisions · 109 | Visions | 109 | Rare | $1.03 |
| Kataki, War's WageModern Event Deck 2014 · 24 | Modern Event Deck 2014 | 24 | Rare | €1.03 |
| Kataki, War's WageMystery Booster 2 Tokens · 148 | Mystery Booster 2 Tokens | 148 | Rare | $0.59 |
| Kataki, War's WageModern Masters · 20 | Modern Masters | 20 | Rare | $1.51 |
| Kataki, War's WageThe List Tokens · SOK-14 | The List Tokens | SOK-14 | Rare | $1.71 |
| Kataki, War's WageSaviors of Kamigawa · 14 | Saviors of Kamigawa | 14 | Rare | €1.63 |
| KataraAvatar: The Last Airbender Jumpstart Front Cards · 12 | Avatar: The Last Airbender Jumpstart Front Cards | 12 | — | — |
| Katara, Bending ProdigyAvatar: The Last Airbender · 59 | Avatar: The Last Airbender | 59 | Uncommon | €0.09 |
| Katara, Heroic HealerAvatar: The Last Airbender Eternal · 215 | Avatar: The Last Airbender Eternal | 215 | Uncommon | €0.64 |
| Katara, Heroic HealerAvatar: The Last Airbender Eternal · 269 | Avatar: The Last Airbender Eternal | 269 | Uncommon | $0.60 |
| Katara, Seeking RevengeAvatar: The Last Airbender Eternal · 148 | Avatar: The Last Airbender Eternal | 148 | Uncommon | $0.17 |
| Katara, Seeking Revenge // Katara, Seeking RevengeAvatar: the Last Airbender Art Series · 29 | Avatar: the Last Airbender Art Series | 29 | — | — |
| Katara's ReversalAvatar: The Last Airbender Eternal · 63 | Avatar: The Last Airbender Eternal | 63 | Rare | €1.90 |
| Katara's Reversal // Katara's ReversalAvatar: the Last Airbender Eternal Art Series · 2 | Avatar: the Last Airbender Eternal Art Series | 2 | — | — |
| Katara, the FearlessAvatar: The Last Airbender Promos · 230s | Avatar: The Last Airbender Promos | 230s | Rare | €2.10 |
| Katara, the FearlessURL/Convention Promos · 2025-3 | URL/Convention Promos | 2025-3 | Rare | €79.03 |
| Katara, the FearlessAvatar: The Last Airbender · 230 | Avatar: The Last Airbender | 230 | Rare | $0.50 |
| Katara, the FearlessAvatar: The Last Airbender · 305 | Avatar: The Last Airbender | 305 | Rare | $6.09 |
| Katara, the FearlessAvatar: The Last Airbender · 350 | Avatar: The Last Airbender | 350 | Rare | €2.90 |
| Katara, the FearlessAvatar: The Last Airbender · 361 | Avatar: The Last Airbender | 361 | Rare | €320.00 |
| Katara, Waterbending MasterAvatar: The Last Airbender Eternal · 93 | Avatar: The Last Airbender Eternal | 93 | Mythic Rare | $7.60 |
| Katara, Waterbending MasterAvatar: The Last Airbender Eternal · 180 | Avatar: The Last Airbender Eternal | 180 | Mythic Rare | $9.84 |
| Katara, Water Tribe's HopeAvatar: The Last Airbender Promos · 231s | Avatar: The Last Airbender Promos | 231s | Rare | €5.36 |
| Katara, Water Tribe's HopeAvatar: The Last Airbender · 231 | Avatar: The Last Airbender | 231 | Rare | €0.28 |
| Katara, Water Tribe's HopeAvatar: The Last Airbender · 351 | Avatar: The Last Airbender | 351 | Rare | €1.17 |
| Katara, Water Tribe's Hope // Katara, Water Tribe's HopeAvatar: the Last Airbender Art Series · 48 | Avatar: the Last Airbender Art Series | 48 | — | — |
| Katerina of Myra's MarvelsUnfinity · 16 | Unfinity | 16 | Rare | $0.18 |
| Katerina of Myra's MarvelsUnfinity · 245 | Unfinity | 245 | Rare | €0.18 |
| Katerina of Myra's MarvelsUnfinity · 302 | Unfinity | 302 | Rare | €0.36 |
| Katerina of Myra's MarvelsUnfinity · 496 | Unfinity | 496 | Rare | $0.25 |
| Kate StewartDoctor Who · 139 | Doctor Who | 139 | Rare | €0.17 |
| Kate StewartDoctor Who · 422 | Doctor Who | 422 | Rare | €0.29 |
| Kate StewartDoctor Who · 744 | Doctor Who | 744 | Rare | €0.39 |