Smoldering Marsh

Earlier tapland designs entered tapped every game, a flat toll you paid regardless of what you had drawn. This generation inverts the arithmetic: the penalty lifts once you control two or more basic lands, which turns the whole incentive backward. The more your manabase leans on real Swamps and Mountains, the more often this comes down untapped and behaves like a clean dual; the greedier and more nonbasic your pile, the more often it stalls. That makes it fixing for a base that has already committed to two colors, the opposite of how most dual-purpose lands want to be built around. The friction is front-loaded, too. The requirement is hardest to satisfy on turn one or two, exactly when a tempo-sensitive deck least wants a tapped source, and trivial by the midgame when a tapped land barely registers. So the decks most desperate for early fixing get the worst of it, and the decks that need help least get a near-painless dual. It is a deliberate reward for patience and color discipline, priced as the reverse of a manabase crutch.