Name: Keening Stone Cost: 6 CMC: 6 Color: CID: Type: Artifact Rules Text: {5}, {T}: Target player mills X cards, where X is the number of cards in that player's graveyard. Set/Rarity: Rise of the Eldrazi rare, Commander 2016 rare, The Brothers' War Retro Artifacts rare Set Code: ROE-R, C16-R, BRR-R Legality: Legal in vintage, Legal in legacy, Legal in penny, Legal in commander, Legal in predh, Legal in timeless, Legal in historic, Legal in brawl, Legal in oathbreaker, Legal in duel, Legal in gladiator, Legal in modern Price: $0.38 Foil price: $0.34