Bullet of Envy (MP01-111 R) [Masterpiece "Pilgrim-Memories"]

As you play this card, target a J/resonator. If that J/resonator is still a legal target, put this card into the field added to the chosen target, otherwise put it into its owner's graveyard. Added J/resonator gains [+800/+800] as long as your life is lower than your opponent's life.