This improves your Bone Spear's damage against vulnerable enemies This increases your crit chance and crit damage against enemies who are caught by your Corpse Tendrils, so is perfect for follow up explosions There are six aspects that I consider core to this build: Reaper Skeletal Warriors second node gives them a chance to create corpses when attacking, Cold Skeletal Mages can either produce essence or make frozen enemies vulnerable for more explosions, while your Iron Golem's second node that makes slammed enemies vulnerable is vital. After all, your minions are vital for producing corpses, slamming enemies, and freezing foes in the case of your mages. In terms of other passives, Skeletal Warrior Mastery, Skeletal Mage Mastery, Golem Mastery, Kalan's Edict, Bonded in Essence, Inspiring Leader, and Death's Defence are all about buffing your minions, whether in terms of health, healing, or attack speed. The first gives any attack a chance at creating a corpse, the second gives you essence when you explode one, the third gives a damage bonus for exploding a corpse, and the last gives you Fortify whenever a corpse is created, which is great for early game survivability. The most important passives for this build are Hewed Flesh, Grim Harvest, Fueled by Death, and Necrotic Carapace. You'll also need to unlock a basic skill, so I recommend Decompose, which serves as a great way to create corpses and generate essence in the early game, before you unlock reapers, as well as essence and corpse generating passives. Bone Storm: This ultimate provides great survivability for the Necro, especially once you get the Aspect of the Shielding Storm that allows it to create a barrier.Raise Dead: Your classic way to re-recruit fallen minions.

Iron Golem Slam: This is your Iron Golem's core ability that stuns enemies in an AoE and makes them vulnerable.Plagued Corpse Tendrils: This ability slows, stuns, and makes enemies vulnerable, plus groups them up for more effective explosion damage.Plagued Corpse Explosion: A key component of this build this ability deals a stacking damage bonus to stunned, slowed, and vulnerable enemies, but can also generate essence with the Grim Harvest passive.

It can also be made better with the Splintering Aspect and the Unique Deathless Visage helm in the late game.

Bone Spear: This core skill is a good investment, letting you apply vulnerable at will for better explosion damage.

Best necromancer build diablo 2