| Thought Vessel (12 variants) | 222 |
| Thran Dynamo (12 variants) | 290 |
| Three Visits (12 variants) | 181 |
| Thriving Bluff (12 variants) | 578 |
| Thriving Grove (12 variants) | 579 |
| Thriving Heath (12 variants) | 580 |
| Thriving Isle (12 variants) | 581 |
| Thriving Moor (12 variants) | 582 |
| Throne of the High City (4 variants) | 500 |
| Throne of the High City (12 variants) | 274 |
| Thwip! (8 variants) | 780 |
| Tiger Shark, Abyssal Hunter (8 variants) | 747 |
| Time Warp (8 variants) | 788 |
| Timeline Inquiry (8 variants) | 641 |
| Tippy-Toe, Terrific Partner (8 variants) | 734 |
| Titan of Littjara (12 variants) | 280 |
| Titan of Littjara (4 variants) | 335 |
| Titania, Proud Pummeler (12 variants) | 62 |
| Titania, Proud Pummeler (4 variants) | 374 |
| Titanium Man (8 variants) | 667 |
| Tombstone, Career Criminal (12 variants) | 160 |
| Tombstone, Career Criminal (12 variants) | 577 |
| Tome of Legends (12 variants) | 223 |
| Tome of Legends (4 variants) | 454 |
| Toxic Deluge (4 variants) | 354 |
| Toxic Deluge (12 variants) | 161 |
| Trading Post (12 variants) | 224 |
| Trading Post (4 variants) | 455 |
| Tragic Arrogance (4 variants) | 323 |
| Tragic Arrogance (12 variants) | 144 |
| Tri-Sentinel, Act of Vengeance (4 variants) | 456 |
| Tri-Sentinel, Act of Vengeance (12 variants) | 115 |
| TVA Bureaucrat (12 variants) | 761 |
| Typhoid Mary, Fractured (12 variants) | 99 |
| Typhoid Mary, Fractured (4 variants) | 421 |
| Ultimate Alliance (8 variants) | 611 |
| Ultimate Nullification (12 variants) | 26 |
| Ultimate Nullification (4 variants) | 324 |
| Ultimo, Civilization's End (12 variants) | 540 |
| Ultron the Annihilator (8 variants) | 668 |
| Ultron, Machine Overlord (8 variants) | 507 |
| Ultron, Unlimited (4 variants) | 422 |
| Ultron, Unlimited (12 variants) | 100 |
| Ultron's Auxiliary (8 variants) | 669 |
| Unclaimed Territory (12 variants) | 275 |
| Undead Hand Ninja (8 variants) | 670 |
| Unlucky Witness (8 variants) | 812 |
| Unstable Experiment (8 variants) | 789 |
| Unstable Molecule Suit (12 variants) | 116 |
| Unstable Molecule Suit (4 variants) | 457 |