For those who don't know me, I'm an avid table-top role-player/game master...and for those who do know me, you know that there are two types of character I typically gravitate towards: the super-devout, noble Paladin protector, and the power-hungry, ever-knowledge seeking Necromancer. And it is in the name of that second character archetype that I read this supplement, and I absolutely love it. It perfectly fills in the gaps that are missing from the standard 3rd/3.5 edition D&D low-level Necromancer as well as providing a number of wonderful options for the mid- to high-level Necromancer (and I don't really think it would be that hard to adapt it to 5th edition). Quite honestly, I consider this supplement to be absolutely vital for an aspiring Necromancer in any campaign, or even one-shot game.
The artwork ranges from fair to decent, and I especially appreciate the little sidebar storyline excerpts that follows the story of Peron, Gudge, and Arathriell. I definitely recommend this book and look forward to increasing my number of Encyclopaedia Arcane supplements in the future.
Never forget, of course, that power comes with a price. You'll know what I mean when you see the potential side effects from channeling too much negative energy.