| Sivriss, Nightmare SpeakerCommander Legends: Battle for Baldur's Gate · 500 | Commander Legends: Battle for Baldur's Gate | 500 | Uncommon | €0.16 |
| Sivvi's RuseNemesis · 21 | Nemesis | 21 | Uncommon | €0.17 |
| Sixth SenseAmonkhet · 187 | Amonkhet | 187 | Uncommon | €0.26 |
| Sixth SenseAmonkhet Remastered · 220 | Amonkhet Remastered | 220 | Uncommon | — |
| Six-y BeastUnsanctioned · 56 | Unsanctioned | 56 | Uncommon | $0.10 |
| Six-y BeastUnhinged · 89 | Unhinged | 89 | Uncommon | €0.24 |
| Sizzling ChangelingLorwyn Eclipsed · 155 | Lorwyn Eclipsed | 155 | Uncommon | €0.10 |
| Sizzling SoloistStreets of New Capenna · 123 | Streets of New Capenna | 123 | Uncommon | €0.11 |
| Skaab GoliathInnistrad · 76 | Innistrad | 76 | Uncommon | €0.04 |
| Skaab GoliathMagic Origins · 74 | Magic Origins | 74 | Uncommon | €0.03 |
| Skaab GoliathThe List Tokens · ORI-74 | The List Tokens | ORI-74 | Uncommon | €0.10 |
| Skaab WranglerInnistrad: Double Feature · 75 | Innistrad: Double Feature | 75 | Uncommon | €0.09 |
| Skaab WranglerInnistrad: Midnight Hunt · 75 | Innistrad: Midnight Hunt | 75 | Uncommon | €0.04 |
| Skanos, Black Dragon VassalAlchemy Horizons: Baldur's Gate · 18b | Alchemy Horizons: Baldur's Gate | 18b | Uncommon | — |
| Skanos, Blue Dragon VassalAlchemy Horizons: Baldur's Gate · 18u | Alchemy Horizons: Baldur's Gate | 18u | Uncommon | — |
| Skanos DragonheartCommander Legends: Battle for Baldur's Gate · 255 | Commander Legends: Battle for Baldur's Gate | 255 | Uncommon | €0.12 |
| Skanos DragonheartCommander Legends: Battle for Baldur's Gate · 410 | Commander Legends: Battle for Baldur's Gate | 410 | Uncommon | €0.10 |
| Skanos DragonheartCommander Legends: Battle for Baldur's Gate · 521 | Commander Legends: Battle for Baldur's Gate | 521 | Uncommon | €0.06 |
| Skanos, Dragon VassalAlchemy Horizons: Baldur's Gate · 18 | Alchemy Horizons: Baldur's Gate | 18 | Uncommon | — |
| Skanos, Green Dragon VassalAlchemy Horizons: Baldur's Gate · 18g | Alchemy Horizons: Baldur's Gate | 18g | Uncommon | — |
| Skanos, Red Dragon VassalAlchemy Horizons: Baldur's Gate · 18r | Alchemy Horizons: Baldur's Gate | 18r | Uncommon | — |
| Skanos, White Dragon VassalAlchemy Horizons: Baldur's Gate · 18w | Alchemy Horizons: Baldur's Gate | 18w | Uncommon | — |
| Skarrgan FirebirdArchenemy: Nicol Bolas · 57 | Archenemy: Nicol Bolas | 57 | Uncommon | €0.13 |
| Skarrgan FirebirdModern Masters 2015 · 123 | Modern Masters 2015 | 123 | Uncommon | €0.22 |
| Skarrgan SkybreakerDuel Decks: Heroes vs. Monsters · 60 | Duel Decks: Heroes vs. Monsters | 60 | Uncommon | €0.06 |
| Skarrgan SkybreakerGuildpact · 130 | Guildpact | 130 | Uncommon | €0.08 |
| Skarrg GuildmageGatecrash · 196 | Gatecrash | 196 | Uncommon | €0.09 |
| Skarrg, the Rage PitsDuel Decks: Heroes vs. Monsters · 73 | Duel Decks: Heroes vs. Monsters | 73 | Uncommon | €0.93 |
| Skarrg, the Rage PitsGuildpact · 163 | Guildpact | 163 | Uncommon | €0.61 |
| Skarrg, the Rage PitsPlanechase Anthology · 127 | Planechase Anthology | 127 | Uncommon | €0.50 |
| Skarrg, the Rage PitsPlanechase 2012 · 127 | Planechase 2012 | 127 | Uncommon | €0.91 |
| Skarrg, the Rage PitsSalvat 2005 · I28 | Salvat 2005 | I28 | Uncommon | €0.43 |
| Skarrg, the Rage PitsThe List Tokens · PCA-127 | The List Tokens | PCA-127 | Uncommon | €0.87 |
| SkateboardTeenage Mutant Ninja Turtles · 178 | Teenage Mutant Ninja Turtles | 178 | Uncommon | €0.27 |
| Skatewing SpyRavnica Allegiance · 52 | Ravnica Allegiance | 52 | Uncommon | €0.10 |
| Skeletal ScryingCommander 2014 · 162 | Commander 2014 | 162 | Uncommon | €0.17 |
| Skeletal ScryingCommander 2017 · 125 | Commander 2017 | 125 | Uncommon | $0.42 |
| Skeletal ScryingConspiracy · 124 | Conspiracy | 124 | Uncommon | $0.34 |
| Skeletal ScryingOdyssey · 161 | Odyssey | 161 | Uncommon | $3.92 |
| Skeletal ScryingThe List Tokens · C14-162 | The List Tokens | C14-162 | Uncommon | €0.32 |
| Skeletal WurmRise of the Eldrazi · 127 | Rise of the Eldrazi | 127 | Uncommon | €0.17 |
| Skeletal WurmThe List Tokens · ROE-127 | The List Tokens | ROE-127 | Uncommon | $0.12 |
| SkeletonizeShards of Alara · 114 | Shards of Alara | 114 | Uncommon | €0.07 |
| Skeleton KeyShadows over Innistrad · 263 | Shadows over Innistrad | 263 | Uncommon | €0.23 |
| Skeleton ShardPlanechase · 127 | Planechase | 127 | Uncommon | €0.29 |
| Skeleton ShardMirrodin · 242 | Mirrodin | 242 | Uncommon | €0.15 |
| Skemfar ElderhallKaldheim · 268 | Kaldheim | 268 | Uncommon | €0.08 |
| Skemfar ShadowsageKaldheim · 110 | Kaldheim | 110 | Uncommon | €0.20 |
| Skemfar ShadowsageFoundations Jumpstart · 489 | Foundations Jumpstart | 489 | Uncommon | €0.22 |
| Skewer the CriticsBreaking News · 26 | Breaking News | 26 | Uncommon | €0.09 |