Wedding Ring
Note: The image above may show a different printing.

結婚指輪 (Wedding Ring) (ja)

Artifact (CMC 4)
When Wedding Ring enters the battlefield, if it was cast, target opponent creates a token that's a copy of it.
Whenever an opponent who controls an artifact named Wedding Ring draws a card during their turn, you draw a card.
Whenever an opponent who controls an artifact named Wedding Ring gains life during their turn, you gain that much life.