You forgot to account for the gear that provides the Health maximum. So both Health and Ward are reliant on specific gear. HP builds will typically wear +Health affixes on multiple items, as well as specific unique gear like Titan Heart or Pale Ox.
You are correct about the Leech though, Ward leech doesn’t exist in LE (yet).
The common ways you generate ward are:
- Stack Attack/Cast Speed really high and combine this with Ward on Use/Cast/Hit type effects to generate Ward constantly.
- Stack Health maximum and convert it to Ward via %Ward per missing Health (so called low life builds)
- Stack Health maximum and convert % of Current Health into Ward with passives and items like Heart of Uhkeiros. This is incompatible with low life builds, but quite compatible with the high Cast speed builds, and usually also uses leech to refill the lost HP back.
- Mana Spent gained as Ward, this obviously works only with high mana consumption builds to produce good numbers.
- Stacking pure Ward per Second. This is an equivalent to Health Regen, but weaker.
- Stacking various attribute X + combining that with an item that generates Ward or Ward per Second from it. Boneclamor Barbute, Vessel of Strife, Paladin’s Healing Hands and other examples are one of the most powerful ways to generate Ward, but also require specific gearing.
Building Sorcerer for Health is quite good.
On top of things like Arcane Focus and Edict of the Scion in RM tree, at 3000 max HP you can get ~240 Ward per elemental spellcast from Heart, an additional ~570 per Teleport cast from the Teleport passive, and if you spec into Reactive Ward and Silver Rune in Mage tree, that’s 1800 Ward anytime your HP total goes below 70% HP, which you can proc with the Heart of Uhkeiros effect too.
This combines well with the ward from Lost Knowledge and the WPS from max mana stacking you already have.
Oh and btw.:
If you spec it correctly, Flame Ward gives over 1200 Ward and you get 2 Charges. 3 Charges if you put a sealed affix on your body armor.
The boots you found are pretty good for mana stacker builds. Another option is experimental boots affix “Ward gained per 10 Missing Mana when you use a Traversal Skill”.