The mod is called NPC's Unique Tattoo For The Warden and it is a collection of various face modification files for the warden in-game. The warden is a kind of NPC that can be found in many different places and situations, such as on the street or in a prison. In the game, the player can create their own characters and use them to explore the world. In order to do this, they need to be able to modify the characters in various ways, which is why this mod is so useful.