The most recent character that I have played on the normal servers and have fallen in love with, is the Summoning Necromancer. PTR Patch 1.13 brought about some buffs which really helps define the damage done from the Necromancer himself, and also helped solve some problems as far as what skills to choose aside from summons.
Official Blizzard Quote:
Necromancer
-Blood Golem - Removed negative shared life effect (player no longer loses life when golem takes damage).
-Corpse Explosion - Increased base damage dealt from 60% - 100% to 70% - 120% of corpses health.
-Poison Nova - Increased base damage by 15%.
I have personally always stuck with Blood Golem, it always kept me alive in times of need, others may want to use Clay Golem for it's slow skills. Anyway, prior to 1.13, there was a lot of debate about what skill to use, some said max Corpse Explosion, some said go with Poison Nova or Poison Dagger, other said go with Bone Spear/ Bone Spirit. Though now, I can go with a Psn Nova and CE combination for maximum effect.
Strength: This depends on how rich you are in-game. However, as of now, you can respec your character if you overfill your Strength. Basically, you only need enough Strength to use all of your items.
Dexterity: This also depends on how rich you are in-game. However, as of now, you can respec your character if you overfill your Dex. Basically, you only need enough Dexterity to use all of your items. Max block isn't a big deal here, you won't be tanking at all. If you happen to take damage, you'll have Bone Armor on.
This leaves us with 3 skill points wherever you want. We don't have Bone Wall or Bone Prison, but we receive the Bone Wall charges from our boots. You could put them in Bone Spirit or Bone Spear, but our damage will be coming from Poison Nova and Corpse Explosion, with Teeth for psn immunes. With that in mind, you could either put the last three into CE, Bone Armor, or you could complete the Curse tree by getting Dim Vision, Confuse, and Attract. If you are looking to save points you can take a few out of CE, though with 10 points in CE, it should clear a room out due to it's large radius.
Mercenary:
Official Blizzard Quote:
Necromancer
-Blood Golem - Removed negative shared life effect (player no longer loses life when golem takes damage).
-Corpse Explosion - Increased base damage dealt from 60% - 100% to 70% - 120% of corpses health.
-Poison Nova - Increased base damage by 15%.
I have personally always stuck with Blood Golem, it always kept me alive in times of need, others may want to use Clay Golem for it's slow skills. Anyway, prior to 1.13, there was a lot of debate about what skill to use, some said max Corpse Explosion, some said go with Poison Nova or Poison Dagger, other said go with Bone Spear/ Bone Spirit. Though now, I can go with a Psn Nova and CE combination for maximum effect.
Mercenary:
Diablo III Analyst
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