Ethereal Haze

White's take on the Fog effect, and a quietly broader one than the green template it imitates. Because only creatures deal combat damage in the first place, preventing all damage dealt by creatures covers every block-step assault Fog does, then keeps going: it also blanks the noncombat damage creatures throw around, the pingers tapping for a point, the fight spells, the deathtouch trades resolved outside the red zone. So the colorshift is not a downgrade for the privilege of being white; it is a small upgrade hidden under the same one-mana price. The Arcane tag is why this exists as its own card rather than reading as a plain reprint. As an Arcane instant it slots into the splice machinery the white-green spirits package was built around: other Arcane spells can be spliced onto it, it counts toward effects that reward casting that subtype, and it turns a stock defensive blank into a piece that participates in an engine instead of sitting next to one. Strip the subtype and you have a colorshifted Fog; leave it on and you have a Fog that plays with the rest of the deck. The economics are the usual ones for the effect. It erases one turn of creature damage and answers nothing else: burn still connects, mass removal still resolves, the next combat step arrives right on schedule. The whole transaction comes down to whether one bought turn is worth the card you spent buying it.