Anarchic Heritage( Planar Handbook, p. 38)
You are descended from creatures native to the planes of chaos. You share some of your ancestors' natural resistance to effects that would reshape your form, and you are resistant to the magic of lawful foes.
You gain a +4 bonus on saving throws against polymorph or petrifi cation effects. You also gain a +1 bonus on saving throws against spells or other effects created by lawful creatures.