Zhalfirin Void

A colorless source that shows you one card as it arrives, and the terms of that trade are the whole story. Tapping only for is a genuine cost in any deck that needs its colors on curve: this land will not cast a colored spell, and in a two- or three-color shell every colorless source is a slot that could have been fixing. What it buys back is a single scry when it enters, free of any card or mana investment, a reliable smoothing of the draw the turn it comes down. That is the entire proposition. It belongs to a small family of utility lands that neither ramp nor fix but shave a sliver of variance from your opening draws, trading a color for a minor guaranteed effect. The scry is front-loaded and one-time; there is no engine here, only a hedge against a rough opening. It earns its place in decks whose colored requirements are light enough, or whose other fixing is deep enough, that a colorless source costs almost nothing, and that would rather guarantee a look at the next card than protect a hair of tempo. In mono-colored builds the penalty shrinks toward zero, since a colorless source there displaces very little, and the scry becomes pure upside over a land that simply makes mana and shows you nothing.