| Rarity: | R |
| #: | 400 |
| Creature Type or Sub Type: | Land |
| Rules Text Contains: | T: Add C.
T: Add U or B. Underground River deals 1 damage to you. |
| Flavor: | "The war polluted the land, turning what had once been fruitful fields into fetid morasses of mud and rusted corpses."—The Antiquities War |
| Set: | Commander: Modern Horizons 3 |
| Number: | 400 |
