Dying Wish

Oracle Text

Enchant creature you control

When enchanted creature dies, target player loses X life and you gain X life, where X is its power.

Card Rulings

1/24/2013 Use the creature’s power the last time it was on the battlefield to determine how much life the target player loses and how much life you gain.
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.