Radiant Grove

The trade is spelled out on the second line: it enters tapped, always, with no life-payment clause and no condition that lets it come down ready when you control few other lands. That flat tempo cost is what buys the Forest Plains typing, and the typing is the entire point. A Selesnya dual with no basic subtypes fixes the same two colors without the tapland drawback, but it can never be fetched by an effect that searches for a Forest or a Plains, nor cheated into play by a card that puts a land onto the battlefield by its basic subtype. This one can. It slots into fetch-toolboxes and search packages that basic-typeless duals lock out entirely, which is worth a turn of waiting to any deck that would rather pay tempo up front than lose the ability to tutor its mana later. As a piece of the manabase it is the honest version of the dual: no hidden upside, no drawback beyond the one it advertises, doing exactly one job for the two colors most inclined to grind out long games.