Ghostly Flame

Protection from black and protection from red were everywhere in this era, and a creature with the right keyword simply could not be burned or drained by the two colors whose whole job that was supposed to be. This enchantment answers them by rewriting the color of the damage itself: every burn spell, every combat hit from a red or black creature becomes a colorless source, and protection keyed to a color stops preventing that damage. The fix is surgical. It changes the source's color for damage purposes only, so the spells still cost what they cost and still get countered or redirected normally; the damage-prevention property protection reads off of is the only thing that shifts. Its ceiling is narrow by construction. In a game with no relevant protection it does literally nothing, sitting on the battlefield as a dead permanent, and that conditional nature is the entire point. This is targeted hate for one specific defensive technology, built at a time when broad protection abilities were Wizards' chosen lever for balancing creatures against the aggressive color pair, and common enough to justify a two-mana enchantment whose only function is switching that lever off.