Underground River Tweet Website Exclusive, Moderate Play, English, 3 In stock $12.16 Website Exclusive, Heavy Play, English, 1 In stock $10.73 Details Color: Land Card Text: T Add 1 to your mana pool. T Add U or B to your mana pool. Underground River deals 1 damage to you. Rarity: R Card Type: Land Name: Underground River Finish: Regular Set Name: Ice Age