Killing Stone (ABC-SD10-063 R) [ABC Duel Decks]

If don't control a J/ruler named "Lilias Petal, Agent of Salvation" or "The Nine-Tailed Fox", this card enters the field rested unless you pay 300 life. This card has the magic stone type wind magic stone and a darkness magic stone. When this card is put into a graveyard from your field >>> Your opponent loses 100 life and you gain 100 life. [Rest]: Produce G or B.