Mirrorform

The copy effect turned inward. Where a clone usually stamps one thing onto one body, this rewrites your entire nonland board into duplicates of a single target: creatures, artifacts, enchantments, planeswalkers, all collapsing into the same non-Aura permanent at once. Instant speed is the operative wrinkle. A board-conversion effect you can hold up during combat behaves nothing like the sorcery-speed versions that came before it; you can wait until the stack settles exactly where you want, then flatten your whole side into whatever the moment demands. Point it at an attacker mid-combat and your board becomes a wall of that attacker; point it at an opposing bomb and every permanent you control answers with a copy of their threat. Excluding Auras does quiet cleanup: an Aura needs something to enchant, so copying your board into a legion of them would produce orphans with no legal home, and the restriction steers the effect toward permanents that stand alone. What separates this from the mass-copy effects of the past is that those were slow and symmetrical; this is fast, one-sided, and aimed at a target you pick after reading the full texture of the board. Six mana held open is a real tax, but the payoff is reshaping everything you own inside a single instant-speed window.