First build mainly centered around Power Within and trying to get as much damage out as possible. Comments appreciated.
Build can also be altered by using Quelaag's Furysword instead of the heavier Chaos Blade. You then could Black Iron Leggings and Gauntlets to boost psychical defense ever so slightly and increase poise to 36 while keeping fast roll. This does more fire damage at the expense of the less base regular damage.
