Absolute Grace

Color hate built on a wall rather than a blow, and the design choice that makes it a sledgehammer instead of a scalpel: the protection lands on every creature in play, yours and your opponent's alike. That indiscriminate reach is exactly what makes it work. Black's classic toolbox leaned on targeted removal and creature combat, and a fixed barrier shuts both off wholesale: a black Terror or Dark Banishing cannot legally name a creature it cannot affect, and black creatures cannot deal combat damage to anything carrying the protection. A two-mana enchantment that pre-emptively neutralizes a color's entire creature-interaction layer does more standing work than any one-shot instant could, and it never expires. What you give up shows at the seams. Your own black-touching plans go cold too; the protection cuts both ways at the combat step; and the effect leaves whole categories untouched. Edict effects like Diabolic Edict make the player choose a sacrifice and care nothing for what a creature has protection from, so the barrier does nothing against them. That gap is the design talking. This is the permanent-based color hoser in its purest form, trading the flexibility of targeted answers for a standing fixed wall, and it asks the white player to accept a clean, total shutdown of one color's combat-and-removal plan while living with the holes that absolute refusal-to-discriminate opens everywhere else.