In Reply To #5
To add to this strategy, I believe if you deactivate the Agony after the attack has already started the stats for the attack will remain as if agony was active. So activate, quickly use, then instantly deactivate right after the move starts. I know familiars will retain stats after you un-equip stuff. Put on two death rings, call familiars, then take death rings off, and their stat boots remain.