Simic Guildgate

The deal Wizards offers with every Guildgate is plain: a guaranteed two-color tap in exchange for a turn of tempo. The land always enters tapped, no clause to unstick it, no battle-land condition to satisfy, no surveil trigger to soften the blow. That tax is the entire design, and it places this dual at the bottom of the fixing hierarchy on purpose. A green-blue mana source that costs nothing to play but always costs a tempo step is the floor that more expensive fixing (the shocklands, the painlands, the slow-fetch duals) is priced above. What the Gate type buys back is a payoff axis the bare fixing never had: a small family of cards that count Gates or reward controlling them turns a deliberately weak land into a build-around resource. Outside those decks it does the most honest thing a land can do, which is enter tapped and produce one of two colors when you need it. There is no upside hidden in the rate and no trick in the timing; the value is in costing zero cards and asking only that you sequence it on a turn you can afford to fall a step behind.