Minecraft wiki entry for Difficulty, associated text: End portals cannot be activated by the player in Peaceful difficulty, because it is impossible to acquire the twelve eyes of ender necessary to activate an end portal by killing endermen.[note 1] However, it is possible for an end portal to be activated by naturally generating with an eye of ender already embedded within all 12 end portal frames. For any given end portal, there is only a 1 in a trillion chance of this happening.[note 2] However, because of the huge number of possible seeds, over 8 million seeds in Java Edition are known to generate such end portals. [1]