WHAT? I literally got mine for a Chipmunk Funk, not kidding.
(Siren's scroll, not marilith chain)
That's absolute BS. There have been many great suggestions that will work including the what was suggested in the OP. Some people just don't want it to work because they have so much invested in the "MOAR DPS!!! MOAR HP!!! HJEAL MEH!!!!" neanderthal game style.
Without damage mitigation there is no point in a defender line at all.
And how the heck does an FvS get 800 HP? Simply asking how.