Diabolic Servitude is a uncommon Enchantment card from Commander 2015 (C15), collector number 120. Current market price: $0.23, TCGplayer market prices via Scryfall.
When this enchantment enters, return target creature card from your graveyard to the battlefield. When the creature put onto the battlefield with this enchantment dies, exile it and return this enchantment to its owner's hand. When this enchantment leaves the battlefield, exile the creature put onto the battlefield with this enchantment.