Lunar Force

In Commander, Lunar Force is a political enchantment with a real ceiling — in a dedicated flicker or enchantment-recursion deck, it locks the table out of key spells every turn cycle, which is devastating in a four-player game where opponents burn resources playing around it. Outside that shell, the symmetry kills it: you need consistent upkeep manipulation to make Lunar Force yours and not everyone's. Competitive formats like Legacy and Vintage have no interest in a three-mana enchantment that requires setup when hard countermagic is cheaper and unconditional. Modern and Pioneer are similarly hostile — the card is legal in both, but no archetype wants it. Oathbreaker offers a niche angle if your signature spell interacts with the sacrifice loop, but even there the support structure has to be intentional.