| Skyhunter Skirmisher | MM2-32 |
| Skyclave Shade | ZNR-298 |
| Skybridge Towers | SNC-256 |
| Sky Hussar | DIS-131 |
| Sky Crier | SNC-31 |
| Skullwinder | C20-189 |
| Skullsnatcher | BOK-84 |
| Skullport Merchant | AFR-120 |
| Skullmulcher | 2XM-180 |
| Skullclamp | CMD-260 |
| Skullclamp | C20-251 |
| Skullclamp | C17-222 |
| Skullbriar, the Walking Grave | CMD-227 |
| Skull Raid | KHM-111 |
| Skulking Ghost | EMA-107 |
| Skred | CSP-97 |
| Skittering Surveyor | DOM-230 |
| Skittering Crustacean | CN2-36 |
| Skitter Eel | RNA-53 |
| Skithiryx, the Blight Dragon | SOM-79 |
| Skirk Prospector | DOM-144 |
| Skirk Fire Marshal | ONS-229 |
| Skirk Commando | A25-150 |
| Skirge Familiar | USG-157 |
| Skinthinner | LGN-80 |
| Skewer the Critics | RNA-115 |
| Skeleton Archer | M19-118 |
| Skeletal Wurm | ROE-127 |
| Skeletal Scrying | C14-162 |
| Skeletal Changeling | LRW-140 |
| Skarrg, the Rage Pits | PCA-127 |
| Skaab Goliath | ORI-74 |
| Sisay, Weatherlight Captain | MH1-29 |
| Siren Stormtamer | XLN-79 |
| Sink into Takenuma | SOK-89 |
| Singing Bell Strike | KTK-55 |
| Sinew Sliver | PLC-30 |
| Simic Locket | RNA-240 |
| Simic Guildgate | RNA-257 |
| Simian Spirit Guide | PLC-122 |
| Silvos, Rogue Elemental | ONS-282 |
| Silverglade Pathfinder | MMQ-270 |
| Silverglade Elemental | MMQ-269 |
| Silvergill Douser | LRW-87 |
| Silvergill Adept | RIX-53 |
| Silverflame Squire // On Alert | ELD-31 |
| Silverchase Fox | BBD-106 |
| Silverbeak Griffin | M19-285 |
| Silver Myr | MRD-241 |
| Silver Knight | SCG-23 |