Dying Wish | Magic: The Gathering
Formats Dying Wish is Legal in
Official Oracle Text for Dying Wish
When enchanted creature dies, target player loses X life and you gain X life, where X is its power.
Official Rulings for Dying Wish
1/24/2013 : If another player gains control of either Dying Wish or the enchanted creature (but not both), Dying Wish will be enchanting an illegal permanent. The Aura will be put into its owner's graveyard as a state-based action.