Soul Driver before and after Chaos.

Master Death Teddies. Do 1.4k to me, 700 with meso guard I have 3.8k HP.
Vampire saves my butt, each cast equals to a full heal to me. So, there you go ^_^

So basically, less than 18% of your maximum health with Meso Guard. Wait until you fight in areas that damage more than 50% of your MaxHP at a time and then tell me how much you're willing to rely on Vampire.