Mirrorweave

Most copy effects pick one creature and reshape it. This one runs the inverse: it freezes the entire board into a single mold and stamps every other creature with it. The target is yours to choose, but "each other" supplies the swing, because the effect touches both sides of the table at once. Aim it at your largest threat and the whole team inherits the body; aim it at a token or a humble blocker and your opponent's bombs collapse into harmless duplicates. The white-or-blue hybrid pricing lets it slide into a mono-color shell or anything in between without demanding both pips, part of why it surfaces wherever wide boards and combat math intersect. Excluding legendary targets matters more than it looks: the effect has to be funneled through ordinary bodies, where the math is wider and weirder, rather than handed a marquee creature to clone. It rewards a player who can read the stack and the combat step at once, transforming a lethal swing into a stalemate or a stalemate into lethal in a single instant-speed window. As board manipulation it sits closer to a fog or a fight spell than to a clone: an effect that asks what every creature should be rather than what one creature could become.