Your search for "Rootwater Depths 323" revealed the following:
Rootwater Depths (TMP) from Tempest, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Roger Raupp Card Text:T: Add one colorless mana to your mana pool.T: Add U or B to your mana pool. Rootwater Depths does not untap...
Rootwater Depths - TMP Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Roger Raupp Card Text:T: Add one colorless mana to your mana pool.T: Add U or B to your mana pool. Rootwater...