| Untamed Wilds | 279★ |
| Untamed Wilds (17 variants) | 279 |
| Unsummon (17 variants) | 108 |
| Unsummon | 108★ |
| Unholy Strength | 168★ |
| Unholy Strength (17 variants) | 168 |
| Underground River | 350★ |
| Underground River (17 variants) | 350 |
| Uktabi Wildcats | 278★ |
| Uktabi Wildcats (17 variants) | 278 |
| Twiddle | 107★ |
| Twiddle (17 variants) | 107 |
| Tremor | 225★ |
| Tremor (17 variants) | 225 |
| Treefolk Seedlings (17 variants) | 277 |
| Treefolk Seedlings | 277★ |
| Treasure Trove (17 variants) | 106 |
| Treasure Trove | 106★ |
| Tranquility | 276★ |
| Tranquility (17 variants) | 276 |
| Trained Orgg | 224★ |
| Trained Orgg (17 variants) | 224 |
| Trained Armodon (17 variants) | 275 |
| Trained Armodon | 275★ |
| Tolarian Winds (17 variants) | 105 |
| Tolarian Winds | 105★ |
| Throne of Bone | 322★ |
| Throne of Bone (17 variants) | 322 |
| Thoughtleech (17 variants) | 274 |
| Thoughtleech | 274★ |
| Thorn Elemental | 273★ |
| Thorn Elemental (17 variants) | 273 |
| Thieving Magpie | 104★ |
| Thieving Magpie (17 variants) | 104 |
| Temporal Adept (17 variants) | 103 |
| Temporal Adept | 103★ |
| Telepathy (17 variants) | 102 |
| Telepathy | 102★ |
| Telepathic Spies (17 variants) | 101 |
| Telepathic Spies | 101★ |
| Teferi's Puzzle Box | 321★ |
| Teferi's Puzzle Box (17 variants) | 321 |
| Tainted Aether (17 variants) | 167 |
| Tainted Aether | 167★ |
| Swamp (17 variants) | 347 |
| Swamp (17 variants) | 349 |
| Swamp (17 variants) | 346 |
| Swamp | 346★ |
| Swamp | 347★ |
| Swamp (17 variants) | 348 |