So, I started out with more points in my pale master tree than my Eldritch Knight tree and zero points in the harper tree........ I was in the magister tree with some twists from Divine Crusader, Draconic incarnation, and Legendary Dreadnought.
I died repeatedly, so much that it was like a comedy routine and my melee DPS just plain sucked.
I then switched my trees from such to just Legendary dreadnaught with twists from Magister for my necromancy spells.
I still kept dying, just not as much......... My melee improved though.
This time I swapped my focus away from the necromancy tree and put it into the new eldritch knight tree......... not a very big improvement defensively speaking, in fact I think I saw more of a difference offensively speaking but only after I also spent 13 points into the Harper tree for Int To Damage.
I still had to cast Negative energy burst to keep myself healed about 8 times per encounter and yet still managed to die 21 times before the quest was over. I had death aura, greater boon of the undead, and scion Of Shadowfell. Collectively all of that should have been able to keep me healed but it didn't.
Solutions:
1-Add a necromancy option to the multi-selector for Knight's Magic granting them vampirism and negative healing amplification
2-Change Eldritch Accuracy to Eldritch Combat and allow it to grant Intelligence to hit and damage.
3-Create a melee centric orb that grants mainhand weapon improved cursespewing, legendary affirmation, and perhaps vampirism 4
4-Make the Improved Mage Armor passive similarly to how the shield spell is passive for artificers.
5-Create a cloak with insightful physical sheltering, quality physical sheltering, insightful constitution, and some sort debuff guard proc similar to Sticky Goo Guard as such a piece of equipment would fill in a loot attribute gap that this build suffers.
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Update: Relying on Into to hit in this build is a folly, I rebuilt this character around strength as the primary stat and intelligence as the secondary stat and for the first time didn't die once in the new quest while on epic elite, however I did have to go through 15 sp potions as this build absolutely chews through sp even though the only spells used in combat are Negative energy burst, undeath to death, and wail of the banshee with some buffing spells cast shortly before combat.
Prefered numbers estimated here would be subject to being lowered or increased if I could test them.......
Armor Class: 92 (Preferably this should be at least 125)
PRR: 150 (Preferably this should be at 175)
MRR: 114 (Preferably this should be at 175)
BAB: +15/+30
Negative Spell Power: 458
Negative Healing Amp: 195
Double Strike Chance: 3% (Preferably this would be at 50%)
Melee Attack Speed: 45% (Preferably this would be at 65%)
Melee Power: 66 (Preferably this would be at 125)
Negative Energy Spell Critical Chance: 53%
Defence Chance At Level: 53% (Preferably this would be at 65%)