If you junction Drain on your status attack protect and shell to me get worthless. I don't think it gets much better then what you got. Do you have it on everyone? I tried but I think I had to junction a luck up skill cause I didn't know how to boost it up to 255.

100 drains spell and hitting 9999 damage will completly heal you. Some things you can't drain like bosses and zombie things will kill you.