World of Tarvakar
short info must be Lawful Good. only a few classes may become dragon slayers and each gains different benifits. The classes are: Fighter, Cavaliar, Paladin, Holy Knight, Soldier. bonus levels up with pc fighters are better against dragons with their specialised weapon. Cavaliars gain extra tohit bonuses against dragons when they charge. The Paladin gains bonuses to saveing throws. The Holy Knights grants more and more people immunity to dragon fear. Soldiers give more and more troops as bonus tohit dragons.