Blighted Woodland

Ramp that offers nothing to your ramp until you decide to spend on it. Drop it early as a colorless source, tap it like any other land, then cash in later: a four-mana investment plus the sacrifice fetches two basics onto the battlefield tapped. The two-for-one is the appeal, doubling the haul of a single-land fetch, and the cost structure is what keeps the rate honest. You pay full price, plus a card and a land slot, for fixing and acceleration that arrives a turn behind, both basics tapped. The ability carries no timing restriction, and that window is the part worth playing around: crack it on an opponent's end step and the two basics, though they enter tapped, untap with the rest of your board on your turn. Convert during your own main phase instead and they sit dead until the following turn. So the end-step activation is not idle flexibility; it is how you claw back the tempo the tapped clause costs you. That marks it as a tool for the long game rather than a play under pressure: the further the game runs, the more the eventual sacrifice repays the dull colorless mana it produced in the meantime. It belongs to a lineage of utility lands that fold themselves into more mana later, trading immediate board presence for inevitability. Cheap to deploy, untapped on arrival, slow to convert, generous when the conversion finally lands.