Ark of Blight

Land destruction has always been priced as a deliberate setback for the caster: Stone Rain costs three and a card, Sinkhole asked for double black at the dawn of the game. This takes a different route to the same effect, splitting the bill into two installments. Two mana lays it down ahead of time, then three more and a tap fire the destruction whenever the moment calls for it. The artifact sits on the board as a standing threat, a colorless promise that any land you target can come apart the turn you decide to spend on it. That telegraphing is the price of the flexibility: the opponent sees it coming and can play around it, refusing to commit the land you would most want to break. The catch in the other direction is that the kill is locked in once it goes on the stack. Sacrifice is part of the activation cost, so the artifact is already in the graveyard before the opponent gets priority; there is nothing left for them to destroy in response. What the structure buys is independence from color and a window that stays open across turns rather than resolving the instant you cast it. The five-mana total is steep for a single land, which keeps it out of the curves where land destruction actually wins games. Where it earns its keep is the slow grind: a colorless answer to a problem land, held in reserve until the target reveals itself.