Divine spellcasters who devote themselves to the Law domain are strict disciples of legal order. With a touch, a Law-domain spellcaster can lend divine aid to a willing recipient. More experienced devotees of Law can grantaxiomaticpowers to a weapon.15 ...
So the werewolf has DR you can only bypass with a silver weapon - so what? Use some ingenuity and light him on fire, throw him in a pit, toss him off a building, whatever it takes... or just tough it out if you can hurt him despite the DR. It's not like it is AD&D where...