The basic idea of this build is to use the red tearstone with power within to inflict large ammounts of damage with the obsidian greatsword two handed strong attack. The pyromancy flame should remain unupgraded due to the fact that upgradeing it will only cause power within to do more damage to your own HP while its atk boosting effect remains unchanged. The Lingering Dragoncrest ring can prove to be usefull as well.