Forfend

The Fog family with the aperture moved off the players and onto the creatures. Where Fog blanks a whole turn's combat damage, this prevents damage to every creature on the battlefield while leaving players exposed: an unblocked attacker still connects with your face, but no creature trades, dies, or gets shrunk by combat math this turn. That reframes what it is for. A traditional fog buys a turn against an alpha strike; this one freezes the creature-combat exchange itself, so blockers survive assignments they were doomed to lose, attackers come back empty, and removal that runs through damage (a fight spell, a planeswalker's burn, anything resolving as damage to a creature) gets neutralized in the window it lands. The limit is structural: "prevent damage" never sees a sacrifice or a destroy, so a Wrath of God resolves straight through it, and a deathtouch poke that has already been prevented does nothing. The design sits between the symmetric pillow-fort fog and a rebuild-the-board answer like Faith's Reward, doing one narrow job (turning a losing combat into a stalemate, at instant speed, for ) and offering nothing beyond it. Read it as combat-step insurance rather than a board stabilizer: it changes who walks away from a fight, not whether the fight happens.