Archers' Parapet

The first thing to notice is the mismatch between the mana symbols: a green creature with a black activation cost. A 0/5 Wall that taps to make each opponent lose a life is built for two-color attrition decks, the kind that want a body to stand in front of early aggression while a slow life-loss engine ticks away underneath. Defender and the brick-wall toughness do the obvious job, but the activated ability is what gives the card a clock without ever entering combat. Each tap costs two mana and shaves a life off every opponent, so the same permanent that stabilizes the early turns is the one grinding out the late ones. That is a tidy resolution to the perennial problem with defensive creatures: a Wall that only blocks is a card you eventually win in spite of, not because of, and here the brick is also the win condition. Note the scaling baked into the wording: the ability hits each opponent, so an activation that nudges a single duel forward becomes a tax that compounds across a full table. It asks nothing of your attack step and rewards a board state where you are content to sit behind a fortress and let the arithmetic run.