ToME: the Tales of Maj'Eyal

I'm trying to reduce my Max HP as much as possible, but I don't know if there are any talents that actually reduce it (or reduce it by actually substantial values)
Currently I'm only using Necromancer's Blurred Mortality, but it falls off heavily later.
My game is modded, primarily I'm using Spell Merchants and the Youkai Race Pack.
Does anyone have recommendations?