In the "Dungeons & Dragons" role-playing game, Paladin is one of the base character classes. The Paladin is a holy knight, crusading in the name of good and order, and is a divine spell caster. By definition and game restriction, Paladins are always of the 'Lawful Good' alignment in D&D 1st–3rd editions. The 4th edition allows the Paladin to match their deity's alignment. Paladin characters are expected to demonstrate and embody goodness and law – they are not supposed to lie or use poison, and some interpretations say they should only use stealth, missile weapons, and other forms of impersonal warfare as a last resort. Switching to any alignment other than Lawful Good or breaching part of the Paladin's code of conduct results in a loss of all class abilities.