Name: Tidal Force Cost: 5UUU CMC: 8 Color: U CID: U Type: Creature -- Elemental Pow/Tgh: 7/7 Rules Text: At the beginning of each upkeep, you may tap or untap target permanent. Set/Rarity: Commander 2013 rare Legality: Legal in legacy, Legal in duel, Legal in oathbreaker, Legal in vintage, Legal in commander Price: $0.44