Frost Walker
A 4/1 for two is an aggressive rate, but the body is incidental: the real design lives in the drawback. Targeting this creature with anything at all, friend or foe, kills it. That turns the card into a strange object on the battlefield, a beater that cannot be pumped, protected, or buffed, and that evaporates the instant an opponent points a removal spell or a tapper at it. The clever part is that the opponent often does not need to spend a card to deal with it: a single-target effect they were going to cast anyway, even an ability that isn't normally removal but happens to hit it, ends the threat for free. So both players are negotiating around the same rule. You want to swing for four and never invite interaction; they want to find any cheap targeted effect to wave it off. The result is a creature that pressures the opponent into a specific kind of answer rather than any answer, and one that punishes a careless aura or trick from its own controller just as hard. It belongs to a small family of designs where the sacrifice clause is the entire balancing act: a powerful stat line handed out cheaply, then fenced in by a condition so broad that the card's whole life is spent dodging the game's most ordinary verb, "target."
