Your search for "Shivan Reef 316" revealed the following:
Shivan Reef (WC01) (Antoine Ruel) from World Championship Decks 2001, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Rob Alexander Card Text:T: Add one colorless mana to your mana pool.T: Add U or R to your mana pool....
Shivan Reef (C21) from Commander 2021, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Rob Alexander Card Text:T: Add C.T: Add U or R. Shivan Reef deals 1 damage to you.
Shivan Reef (Foil) (APC) from Apocalypse, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Rob Alexander Card Text:T: Add one colorless mana to your mana pool.T: Add U or R to your mana pool. Shivan Reef deals 1...
Shivan Reef - C21 Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Rob Alexander Card Text:T: Add C.T: Add U or R. Shivan Reef deals 1 damage to you.