Scorched Ruins

The Weatherlight pact-lands were Magic's first serious attempt at lands that cost something to enter, and this one sits at the bottom of the curve in both senses: it asks for the most and gives back accordingly. Where most lands are a free drop that taxes nothing but a slot in your hand, this one demands you tear two untapped lands off the battlefield as the price of entry, then pays back four colorless at once. The arithmetic is brutal: you spend a card and two lands to net a single land that makes four mana, so the only reason to run it is to compress that mana into one tap. The design lives entirely in the timing window. Sacrificing two untapped lands the turn this enters means you have converted a board state into one explosive activation, the kind of acceleration that turns a four-, six-, or eight-mana threat into a turn-earlier proposition rather than a slow grind. The catch printed into the replacement effect is unforgiving: if you cannot pay the cost, the land never arrives and goes straight to the graveyard, so a misjudged sequence simply discards a card for nothing. That self-destruct clause is the whole leash on the rate. It punishes the greedy hand as readily as it rewards the prepared one, which is exactly the bargain the cycle was built to make.