| Slate of Ancestry (17 variants) | 308 |
| Slate of Ancestry | 308★ |
| Slay (17 variants) | 163 |
| Slay | 163★ |
| Sleight of Hand (17 variants) | 99 |
| Sleight of Hand | 99★ |
| Soul Feast | 164★ |
| Soul Feast (17 variants) | 164 |
| Soul Warden | 46★ |
| Soul Warden (17 variants) | 46 |
| Spellbook (17 variants) | 309 |
| Spellbook | 309★ |
| Spined Wurm | S10 |
| Spineless Thug | 165★ |
| Spineless Thug (17 variants) | 165 |
| Spirit Link | 47★ |
| Spirit Link (17 variants) | 47 |
| Stone Rain | 221★ |
| Stone Rain (17 variants) | 221 |
| Storage Matrix | 310★ |
| Storage Matrix (17 variants) | 310 |
| Storm Crow | 100★ |
| Storm Crow (17 variants) | 100 |
| Story Circle | 48★ |
| Story Circle (17 variants) | 48 |
| Stream of Life | 272★ |
| Stream of Life (17 variants) | 272 |
| Sudden Impact | 222★ |
| Sudden Impact (17 variants) | 222 |
| Sulfurous Springs (17 variants) | 325 |
| Sulfurous Springs | 325★ |
| Summer Bloom | 273★ |
| Summer Bloom (17 variants) | 273 |
| Suntail Hawk | 49★ |
| Suntail Hawk (17 variants) | 49 |
| Swamp (17 variants) | 341 |
| Swamp | 342★ |
| Swamp (17 variants) | 342 |
| Swamp | 339★ |
| Swamp | 341★ |
| Swamp | 340★ |
| Swamp (17 variants) | 339 |
| Swamp (17 variants) | 340 |
| Swarm of Rats | 166★ |
| Swarm of Rats (17 variants) | 166 |
| Tanglebloom (17 variants) | 311 |
| Tanglebloom | 311★ |
| Teferi's Puzzle Box (17 variants) | 312 |
| Teferi's Puzzle Box | 312★ |
| Telepathy (17 variants) | 101 |