Pillage the Bog

Card selection scaled to lands is old technology, but this design ties the depth of the dig to how much land you have already committed, so the effect grows exactly as the game slows down. Two mana buys a look at twice your land count, meaning it peaks precisely when a grindy midrange board has stalled and you want to reach for a specific answer rather than raw card advantage. Keeping only one card while the rest scatter to the bottom is the restriction that pays for the depth: this digs like a draw spell but functions as pure selection, a filter rather than an accumulator. Plot sharpens the timing. Exiling it on an idle turn banks the sorcery for later, so you can lay the groundwork early and pull the land-fueled dig when your land count has climbed and every point of mana is otherwise spoken for. That decoupling of when you pay from when you cast is the whole appeal in an attrition deck: the mechanic rewards a board built to hoard permanents and out-grind the opponent, converting a shelf of lands into a reliable pipeline to whatever single card the moment demands. The payoff is never speed. It is consistency, the ability to convert accumulated resources into the exact piece you need on the turn you need it.