Paladins gain the Sacred Oath feature at 3rd level, and the Oath of Anarchy is a new option they can choose.

Oath of Anarchy

Traditionally sworn to oneself, a druid, or only the wilderness itself, the Oath of Anarchy binds a paladin to protecting freedom and nature against tyranny and control. These paladins believe in the freedom of chaos; rules and authority are dangerous things, nothing more than the chains that separate people from each other and bind them down against their own desires. People are best off trusted to make their own decisions and learn to peacefully coexist in freedom.

In addition to promoting the freedom of individuals, bearers of this oath also encourage the chaos of the natural world. They dislike conquest of the wilderness, preferring that people live with nature, not against it. In the eyes of many of these paladins, the world was as it was meant to be when it was first made, without the changes wrought by mortal hands. Called Fantra, after the Sylvan word for guardian, these paladins are keepers of chaos and defenders of disorder, sworn to uphold their values even to bloodshed.