| Siona, Captain of the PyleasWilds of Eldraine Commander · 144 | Wilds of Eldraine Commander | 144 | Uncommon | €0.23 |
| Siphon InsightInnistrad: Double Feature · 241 | Innistrad: Double Feature | 241 | Rare | €0.42 |
| Siphon InsightInnistrad: Midnight Hunt · 241 | Innistrad: Midnight Hunt | 241 | Rare | €0.19 |
| Siphon InsightInnistrad: Midnight Hunt · 375 | Innistrad: Midnight Hunt | 375 | Rare | $0.60 |
| Siphon InsightBreaking News · 54 | Breaking News | 54 | Rare | €0.18 |
| Siphon InsightOutlaws of Thunder Junction Commander · 242 | Outlaws of Thunder Junction Commander | 242 | Rare | €0.21 |
| Siphon InsightInnistrad: Midnight Hunt Promos · 241p | Innistrad: Midnight Hunt Promos | 241p | Rare | €0.30 |
| Siphon InsightInnistrad: Midnight Hunt Promos · 241s | Innistrad: Midnight Hunt Promos | 241s | Rare | €0.96 |
| Siphon InsightMagic Online Promos · 94066 | Magic Online Promos | 94066 | Rare | — |
| Sip of HemlockTheros · 106 | Theros | 106 | Common | $0.04 |
| Siren LookoutIxalan · 78 | Ixalan | 78 | Common | €0.14 |
| Siren of the Fanged CoastBorn of the Gods · 50 | Born of the Gods | 50 | Uncommon | €0.11 |
| Siren of the Silent SongBorn of the Gods · 155 | Born of the Gods | 155 | Uncommon | $0.21 |
| Siren ReaverRivals of Ixalan · 54 | Rivals of Ixalan | 54 | Uncommon | €0.06 |
| Siren's CallUnlimited Edition · 78 | Unlimited Edition | 78 | Uncommon | $1.78 |
| Siren's CallRevised Edition · 80 | Revised Edition | 80 | Uncommon | $0.25 |
| Siren's Call30th Anniversary Edition · 77 | 30th Anniversary Edition | 77 | Uncommon | €1.42 |
| Siren's Call30th Anniversary Edition · 374 | 30th Anniversary Edition | 374 | Uncommon | €36.91 |
| Siren's CallFourth Edition Foreign Black Border · 101 | Fourth Edition Foreign Black Border | 101 | Uncommon | €0.56 |
| Siren's CallFourth Edition · 101 | Fourth Edition | 101 | Uncommon | €0.21 |
| Siren's CallCollectors' Edition · 78 | Collectors' Edition | 78 | Uncommon | €1.12 |
| Siren's CallIntl. Collectors' Edition · 78 | Intl. Collectors' Edition | 78 | Uncommon | $2.17 |
| Siren's CallForeign Black Border · 80 | Foreign Black Border | 80 | Uncommon | €0.41 |
| Siren's CallLimited Edition Alpha · 77 | Limited Edition Alpha | 77 | Uncommon | €34.97 |
| Siren's CallLimited Edition Beta · 78 | Limited Edition Beta | 78 | Uncommon | €15.20 |
| Siren's CallSummer Magic / Edgar · 80 | Summer Magic / Edgar | 80 | Uncommon | €125.00 |
| Siren Song LyreBorn of the Gods · 161 | Born of the Gods | 161 | Uncommon | €0.11 |
| Siren's RuseIxalan · 80 | Ixalan | 80 | Common | $0.22 |
| Siren StormtamerCommander Legends · 96 | Commander Legends | 96 | Uncommon | €0.63 |
| Siren StormtamerThe Lost Caverns of Ixalan Commander · 171 | The Lost Caverns of Ixalan Commander | 171 | Uncommon | €0.10 |
| Siren StormtamerThe List Tokens · XLN-79 | The List Tokens | XLN-79 | Uncommon | $0.37 |
| Siren StormtamerIxalan · 79 | Ixalan | 79 | Uncommon | $0.46 |
| Sire of InsanityDragon's Maze · 104 | Dragon's Maze | 104 | Rare | $0.50 |
| Sire of InsanitySecret Lair Drop Tokens · 275 | Secret Lair Drop Tokens | 275 | Rare | €2.61 |
| Sire of InsanityPioneer Masters · 242 | Pioneer Masters | 242 | Rare | — |
| Sire of Seven DeathsFoundations · 1 | Foundations | 1 | Mythic Rare | $17.75 |
| Sire of Seven DeathsFoundations · 292 | Foundations | 292 | Mythic Rare | €35.05 |
| Sire of Seven DeathsFoundations · 362 | Foundations | 362 | Mythic Rare | €177.82 |
| Sire of Seven DeathsFoundations Promos · 1p | Foundations Promos | 1p | Mythic Rare | $19.86 |
| Sire of Seven DeathsFoundations Promos · 1s | Foundations Promos | 1s | Mythic Rare | €30.61 |
| Sire of StagnationBattle for Zendikar · 206 | Battle for Zendikar | 206 | Mythic Rare | €1.47 |
| Sire of StagnationModern Horizons 3 Commander · 272 | Modern Horizons 3 Commander | 272 | Mythic Rare | €1.14 |
| Sire of StagnationBattle for Zendikar Promos · 206s | Battle for Zendikar Promos | 206s | Mythic Rare | €4.96 |
| Sire of StagnationThe List Tokens · M3C-272 | The List Tokens | M3C-272 | Mythic Rare | — |
| Sire of the StormChampions of Kamigawa · 85 | Champions of Kamigawa | 85 | Uncommon | €0.13 |
| Sire of the StormCrimson Vow Commander · 113 | Crimson Vow Commander | 113 | Uncommon | $0.08 |
| SiroccoMirage · 192 | Mirage | 192 | Uncommon | $0.29 |
| Sir Shandlar of EberynLegends · 257 | Legends | 257 | Uncommon | €2.82 |
| Sir Shandlar of EberynMasters Edition III · 174 | Masters Edition III | 174 | Common | — |
| SisayVanguard Series · 106 | Vanguard Series | 106 | Rare | $1.00 |