Suspension Field is a uncommon Enchantment card from Khans of Tarkir (KTK), collector number 25. Current market price: $0.24 (foil $0.35), TCGplayer market prices via Scryfall.
When this enchantment enters, you may exile target creature with toughness 3 or greater until this enchantment leaves the battlefield. (That creature returns under its owner's control.)