Dining Room

A tapped dual that turns idle late-game mana into cards is not a new idea, but the machinery here is worth naming: the Investigate ability is a mana sink bolted directly onto a fixing land, so a source that costs nothing to run pays you back once your curve has emptied and your untapped lands have nowhere better to go. The pricing tells the whole story of when it wants to fire. Six mana all told (four in the activation, then two more to crack the resulting Clue) for a single card is a rate no deck reaches for on purpose; it is the reward for surviving into a grindy board state where mana is abundant and threats have dried up. The Clue token is the clever piece: because the draw is deferred into an artifact, the cost is paid in two installments that can split across turns, and the token itself becomes a body for artifact-sacrifice payoffs rather than a wasted activation. As Gruul fixing, it asks for no color commitment beyond the two colors it produces, which is the trade that makes the sink defensible: you give up enters-untapped tempo up front and buy back inevitability at the end. It belongs to the long line of utility duals that refuse to be dead draws in the late game, doing that work through a repeatable card-advantage engine rather than a creature.