Bone Spear Necromancer Guide
The Bone Spear Necromancer (Bone Necro) is a pure magic damage caster build that uses Bone Spear to launch piercing projectiles that deal devastating magic damage while Bone Prison provides crowd control and Bone Armor offers defensive protection. Bone Spear provides excellent piercing damage and safety through range while synergy skills like Bone Spirit and Teeth amplify damage output. This versatile build excels at all content including magic find runs and boss killing, offering a "bone wizard" playstyle with piercing projectiles, magic damage that few enemies resist, and exceptional safety through ranged combat and bone-based defenses.
First thing to do is allocate 1 point in the following Skills: Amplify Damage, Dim Vision, Weaken, Iron Maiden, Terror, Confuse, Life Tap, Attract, Decrepify, Lower Resist, Bone Wall, Bone Prison, Raise Skeleton, Skeletal Mastery, Clay Golem, Golem Mastery, Iron Golem, Fire Golem, Blood Golem, Summon Resist, Corpse Explosion, Raise Skeletal Mage, and Poison Dagger. After this max out the following Skills: Bone Spear, Bone Spirit, Teeth, Bone Prison, Bone Armor. With your extra points, max out Bone Wall for additional synergy and then put remaining points into Clay Golem and Golem Mastery for tank support.
When it comes to your Attributes, start with acquiring a Hellfire Torch and an Annihilus Charm. Put those in your inventory and then add Strength, enough to wear your gear. Dexterity should be minimal unless needed for gear requirements since you fight from range. Energy can be useful for Bone Spear spam, but gear can compensate with mana bonuses. The rest of your points should go into Vitality for maximum life and survivability while casting Bone Spear from safe distances.
Best Weapon choices include Heart of the Oak Runeword in a Flail for +3 All Skills, 40% Faster Cast Rate, and resistances to maximize Bone Spear effectiveness, or White Runeword in a Bone Wand for +3 Bone Spear, +3 Bone Armor, and 20% Faster Cast Rate as excellent budget option. Death's Web unique unearthed wand provides +2 Poison and Bone Skills and -50% Enemy Poison Resist. Shield wise, Homunculus is Best in Slot for +2 Necromancer Skills and +5 Bone Armor specifically perfect for bone builds, or Spirit Monarch for +2 Skills and 35% Faster Cast Rate. When it comes to your Armor, Enigma Runeword in a Mage Plate base is Best in Slot for +2 Skills and Teleport utility for positioning Bone Spears strategically. Skin of the Vipermagi is excellent for +1 Skills and 30% Faster Cast Rate. Trang-Oul's Scales provides +2 Necromancer Skills and set bonuses. Helmet, Harlequin Crest is ideal for +2 Skills, Life, and Mana for maximum Bone Spear effectiveness, or Lore Runeword as a budget +1 Skills option. For Gloves, Magefist provides +1 Fire Skills and 20% Faster Cast Rate for Bone Spear casting, or Trang-Oul's Claws for 20% Faster Cast Rate, +2 Curses, and cold resist. For the Belt, Arachnid Mesh is perfect for +1 Skills and 20% Faster Cast Rate to enhance Bone Spear damage, or Goldwrap for 30% Extra Gold and 10% Faster Cast Rate. When it comes to Boots, War Traveler for Magic Find and strength/vitality bonuses for efficient farming, or Sandstorm Trek for 20% Faster Hit Recovery and poison resist. Rings, Stone of Jordan provides +1 Skills and mana for Bone Spear spam, pair with Bul-Kathos' Wedding Band for +1 Skills and Life Leech. Amulet you can opt for Mara's Kaleidoscope for +2 Skills and resistances, Tal Rasha's Adjudication for +2 Skills and magic find, or a rare amulet with +2 Necromancer Skills, Faster Cast Rate, and resistances.
For your inventory, focus on Necromancer Skill Charms with +Poison and Bone Skills and life bonuses to maximize Bone Spear effectiveness. Small Charms with 7% Magic Find and resistances or life and resistances for efficient farming runs. Faster Cast Rate Small Charms help reach the 125% FCR breakpoint for optimal Bone Spear casting speed. Mana Small Charms support sustained Bone Spear casting sessions. Life Small Charms provide survivability for ranged combat positioning. Gheeds Fortune for Magic Find, Gold Find, and reduced vendor prices.
Mercenary wise, an Act 2 Nightmare Offensive mercenary with Might Aura can amplify any physical damage component, or Act 2 Nightmare Prayer mercenary for Prayer Aura life regeneration support during long casting sessions. For Weapon, Insight Runeword in a Thresher base is essential for Meditation Aura to support Bone Spear spam and maintain mana for continuous casting, or Infinity Runeword for Conviction Aura though magic damage cannot be reduced by most resistances. Helmet options include Vampire Gaze for Damage Reduction and Life Leech, or Andariel's Visage for Attack Speed and Strength. Armor you want Fortitude Runeword in an Ethereal Sacred Armor base for mercenary survivability and damage, or Treachery Runeword for Attack Speed and Fade proc to keep your mercenary alive while you cast piercing Bone Spears from safe distances with Clay Golem providing additional tanking and Bone Prison controlling enemy movement across the battlefield.