| Name | Cost | Price |
|---|---|---|
| Infectious Inquiry | $0.43 | |
| Infernal Genesis | $5.45 | |
| Infernal Grasp | $0.29 | |
| Infernal Medusa | $5.93 | |
| Infernal Reckoning | $0.29 | |
| Infernal Sovereign | $0.57 | |
| Infernal Spawn of Evil | $0.28 | |
| Infernal Spawn of Infernal Spawn of Evil | $1.05 | |
| Infernal Tribute | $2.85 | |
| Infernal Tutor | $0.50 | |
| Infernius Spawnington III, Esq. | — | |
| Inferno | $0.45 | |
| Inferno Elemental | $0.07 | |
| Inferno Jet | $0.12 | |
| Inferno of the Star Mounts | $9.03 | |
| Inferno Titan | $0.26 | |
| Inferno Trap | $0.40 | |
| Infest | $0.22 | |
| Infestation Expert // Infested Werewolf | $0.29 | |
| Infested Thrinax | $0.29 | |
| Infiltration Lens | $4.22 | |
| Infinite Guideline Station | $0.41 | |
| Infinite Reflection | $0.23 | |
| Infinity Elemental | — |