Trenchpost

Locus has been a dormant land type since the days of Cloudpost and Glimmerpost, where the payoff was colorless mana that scaled with how many you controlled. This inverts the reward from generative to attritional: the second ability turns your accumulated Loci into a mill clock, sending a card per Locus to a chosen player's graveyard. The counting is the point. Every Locus you already play for ramp doubles as a scaling denominator, so a mana base built for volume quietly becomes a self-fueling grindstone that widens with every additional land on the battlefield. It taps for colorless like its predecessors, keeping the ramp identity intact, but the three-mana activation hands the deck a repeatable end-game outlet that older Loci never offered. Land-based mill has always struggled because dedicating card slots to a secondary win condition competes with everything else the deck wants to do; folding the payoff onto a land you were already running sidesteps that tension entirely. What this gives the tribe is a win condition that grows straight out of the board state it was already assembling: a ramp shell that was defined by mana and nothing else finally has a way to close, and the closer scales with the exact thing the deck was built to accumulate.