Survivors' Encampment

Most lands that fix all five colors charge you for the privilege: they enter tapped, they cost life, they demand a basic-land type to fetch. This one asks something stranger. Its second ability is still a mana ability, but the tax is not life or a delay: it is a body you would otherwise be attacking or blocking with. Tap the land, tap an untapped creature, and one of those creatures becomes a single colored pip. The math is exact and easy to overstate. Because the land itself taps as part of the cost, it produces exactly one mana of any color per turn, no matter how wide your board is: five creatures and one creature give you the same one colored source. What a crowded board buys is not more fixing but a cheaper choice, since sacrificing one idle blocker to the tap costs you nothing when you have four others holding the line. Without any creature to tap, the Desert produces only colorless, which is where the tension lives: it is a land that wants a battlefield to lean on, yet the more inviting your battlefield the more you would rather be swinging than converting a swing into a splash. Every turn it asks you to weigh developing your board against casting from it, one creature at a time. The Desert type is the free rider, quietly slotting into any graveyard-and-Desert-matters bookkeeping without asking anything in return.