Tomb Vipers are a variation on the Claw Viper monster, usually encountered in Nihlathak's Temple. On Nightmare and Hell difficulty, the Halls of Vaught may spawn with Tomb Vipers. Their primary attack is a poison missile similar to a Plague Javelin, only capable of much more damage. To explain: Claw Viper Tomb Viper • Claw Viper • Salamander • Pit Viper • Serpent Magus