Halving Season

Doubling enchantments taught a generation of Commander players a vocabulary of amplification: Doubling Season multiplies your own tokens and counters, and an entire subgenre grew from that grammar. This card inverts the syntax, taking the same "instead" replacement template and aiming it outward, halving what everyone else generates rather than doubling what you produce. The asymmetry drives the whole design: it does nothing for your own board, so it operates as pure interaction, a static tax on every token swarm, every planeswalker loyalty tick, every proliferate pile, every counter engine an opponent assembles. Rounding down is where a nuisance becomes a genuine hoser: a single token becomes zero, a lone counter becomes none, and any effect trading in small odd numbers simply evaporates. It presses on go-wide and go-tall strategies alike, and it never needs to be activated or targeted; a removal spell answers one threat at a time, while this one rewrites the math for three or four opponents at once, silently, from the moment it resolves until someone deals with it. That makes it a rare piece of multiplayer-facing hatred whose value scales with how greedy the rest of the table decides to be rather than with anything you do.