Treno, Dark City

Fixing at its most stripped-down: either color you need for a Dimir manabase, produced without a shock, without life loss, without a card to reveal or a condition to satisfy. The only tax is a turn spent entering tapped, and that single delay is the entire price. Wizards has leaned on this template for common-rarity fixing since the early tapped duals of the first multicolor sets, and the logic hasn't drifted: give a two-color deck reliable access to both halves of its pairing, then dock it one point of tempo up front. What keeps this land pinned to common rather than climbing toward the fetchable duals is what it doesn't carry: no basic land type. Nothing that searches for an Island or a Swamp can find it, which is precisely the ceiling that separates lands like this from the versions that ask more of a manabase and reward it more. For a slower deck happy to spend an untapped-mana turn on a tapped source, it asks nothing of the deckbuilder beyond patience on turn one. The enemy-versus-allied distinction that once governed which dual you could run, and how good it was allowed to be, has quietly dissolved here; this is Dimir fixing offered to anyone who wants it, at the rate that comes with a slow start built in.