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 predh, Legal in penny, Legal in commander, Legal in vintage, Legal in modern, Legal in legacy, Legal in brawl, Legal in historic, Legal in duel, Legal in gladiator, Legal in timeless, Legal in oathbreaker Price: $0.37 Foil price: $0.36