Dragon Rage( Eberron Campaign Setting, p. 52)
You call upon the power of your dragon totem to enhance your barbarian rage.
Dragon Totem (ECS) , Base attack bonus +4, ability to rage or frenzy, region of origin Argonnessen,
When you enter a rage or frenzy, your natural armor bonus improves by +2. In addition, for the duration of your rage or frenzy you gain resistance 10 to the energy type associated with your dragon totem (total resistance 15 while raging).