Fire Ants

A repeatable ground-sweeper whose entire design turns on the mismatch between what it dishes out and what it can take. Tapping it pings every other non-flying creature for one, which cleans up tokens and one-toughness aggressors while the source itself stays untouched: the ability hits each other creature, so it never catches its own 2/1 frame. The discipline is the toughness, not the cost. It survives its own pulse but dies to almost anything that pings back, which means the board state it punishes (cheap, wide, ground-bound) is also the board state most able to kill it in retaliation. The activation draws a hard line between the ground it can grind and the air it cannot touch: flyers are immune, so a deck built around it wants its own threats either above the one-toughness floor or off the ground entirely, while the opponent's go-wide plan rots one point at a time. The tap cost is the other lever, since each sweep costs the card its attack or block that turn, turning every activation into a tempo decision rather than free value. It is a pinger built to wage attrition against the cheapest, widest decks, with a body deliberately fragile enough that you have to earn the grind rather than coast on it.