Living Plane

A symmetrical board-warping enchantment from the era when Magic still believed symmetry was its own kind of balance. The design turns every land in play into a 1/1, which presents as a global animation effect but functions as a global removal spell: every Wrath of God, every Earthquake, every Pyroclasm now answers the opponent's mana base, and Maze of Ith now stops a Plains from attacking. The World supertype does the policing here, a now-defunct rules construct that limited the battlefield to one copy of any World card at a time, so a second Living Plane sent the first to the graveyard. That supertype was Legends' attempt to make format-warping enchantments self-regulating; the mechanic was abandoned within a few years because the legend rule it implied confused more games than it balanced. What remains is the purest distillation of a green design idea the color has flirted with ever since (Nature's Revolt and Natural Affinity carry the same animation clause forward): if forests are alive in flavor, make them alive in rules, and let the consequences fall where they fall. The consequences are usually catastrophic for whoever has more lands.