Nature's Peace is a unique Ring from Diablo II.
The most unique characteristic of Nature's Peace is its ability to make slain monsters "Rest in Peace." This means that the player or any monster cannot do anything to that body, including revive it, or use a spell such as Redemption or Corpse Explosion on it. Therefore, builds utilizing corpses are likely to find Nature's Peace detrimental. This trait only works if enemies are killed with physical or elemental damage, but not if they are killed with magical damage (although it does work for the Paladin's Blessed Hammer skill).