Diablo 2 Necromancer Skills and Synergies
Explore all 30 Diablo 2 Resurrected Necromancer skills, prerequisites, synergies and rank values. Plan your build with the free D2R skill calculator.
Open the free D2R Skill Calculator & Build Planner and choose Necromancer from the class tabs.
Diablo II skill calculator and build-planning reference
Plan skill allocations for all eight classes, including the Reign of the Warlock class. Each tree uses the released game's page, row and column positions. The planner distinguishes invested points from bonus skill levels, enforces prerequisites and level limits, and stores named builds on this device within the selected profile.
Skill points, bonuses and saved builds
Characters earn one skill point per level after level 1. Den of Evil, Radament and Izual together award four additional skill points per difficulty, for up to twelve quest points and a maximum of 110 points at level 99. Select the rewards actually earned rather than assuming every quest is complete. A skill's unlock level also limits how quickly further points can be invested.
The current allocation uses your selected level. Target allocations use a level-99 point budget with the selected quest points. Bonus skill levels do not spend earned points and do not fulfill prerequisites. Some mechanics specifically use invested points rather than effective skill levels. Each build retains its edition and patch; changing a patch does not silently discard its allocation.
Create, rename or duplicate builds, add notes and leveling checkpoints, and export a backup before clearing browser data. Local saves do not synchronize between devices. Build sharing excludes private notes. The calculator is a planning reference, not a full gear, enemy-resistance or combat simulation.
Each saved build belongs to one class. You can keep multiple builds for the same class. The saved-build dropdown switches plans, while class tabs resume a matching plan or open a temporary experiment without requiring a save or changing existing builds. On phones and installed web apps, open this reference from the app menu rather than a floating shortcut over the trees.
Equipment, +skills and synergy accounting
Open +Skills beside level and quests to enter manual all/class, tree, elemental-type or individual skill bonuses. Open Gear to search compatible unique, set and runeword items by name, set variable skill rolls, or enter a generic bonus for an undecided slot. Manual bonuses and equipment add together; do not enter the same item twice in both places. The complete equipment and charm configuration is saved, backed up and shared with the build. A selected item's version remains pinned rather than silently changing its rolls when you compare build patches.
Annihilus adds one to all skills. Hellfire Torch adds three to its particular class; this skill bonus is fixed, and a different-class Torch adds no class skill levels. Skill grand charms add to the selected tree. Classic cannot use these charms. Distinct set pieces activate their eligible piece, partial and full-set bonuses; wearing the same set ring twice does not manufacture a missing piece. A completed set receives a decorative glow, not an additional calculated bonus.
Invested points, manual bonuses and equipment contributions are displayed separately. An effective rank above twenty is blue; an icon with the maximum invested points has a green border. General +skills do not learn a skill or fulfill its prerequisites. A direct individual skill grant can make a skill usable without investing, but never creates invested synergy points.
Most damage synergies use invested points only. Read each skill's reference breakdown: effective-level passives and masteries are explicitly distinguished, including Skeleton Mastery references. Supported Sorceress damage components include applicable Fire or Lightning Mastery and verified equipment percentage-skill-damage modifiers. These percentage modifiers are additive with mastery and multiply the synergized component. Cold Mastery instead reduces enemy resistance; it does not multiply displayed raw cold damage.
This is not a complete combat simulator. Enemy resistance, immunities, PvP penalties, weapon damage, summons, triggered spells, item auras and some missile/hit-frequency calculations require additional models. Unsupported tooltip values are marked not calculated, not filled with guessed numbers. Random item properties must be entered explicitly and are not all granted at once.
Choose a class or skill tree using its named tab. Click or tap a skill square to invest one point; hold its icon to maximize invested points. Right-click or use minus to remove one point, or hold minus to remove eligible invested points without breaking prerequisites. Click the rank, or hold it, to enter an exact invested-point count. Hover with a mouse or use the plus control for skill details. Scrolling cancels a pending hold. Bonuses are separate from invested points.
Green synergy lines flow from contributing skills into the active skill. In single-tree phone view, the S toggle pins incoming synergies even when using a PC mouse. Cross-tree sources appear as green ghost skills at their own level rows; click or tap a ghost to open its source tree without spending points. The destination stays green until you hover over or interact with it.
Choosing a D2R skill calculator
Looking for the best D2R skill calculator for your build? Compare class and patch coverage, prerequisite checks, hard-point synergy accounting and gear bonus handling. This free skill calc supports Amazon, Assassin, Barbarian, Druid, Necromancer, Paladin, Sorceress and Warlock, on PC and phone. It is a build-planning tool, not a ranked build guide or a guarantee of the strongest setup.
Browse all Diablo 2 skill trees and class references. Use runeword recipes, unique equipment, set bonuses, Horadric Cube crafting and Terror Zone farming references alongside your build.
The seven original classes use skill art from Blizzard's official Arreat Summit archive. Warlock icons are cropped from user-supplied in-game skill-tree screenshots, not downloaded from that archive or another gaming site.
Released patch comparison
Available snapshots: 3.2.92777 and 3.3.93847. Compare the same invested points and bonuses across these snapshots. Green means a verified beneficial change, red means a verified disadvantage, and neutral labels describe mixed or context-dependent changes. Lower mana cost can be beneficial even though its arrow points down. Unchanged skills are not presented as buffs or nerfs. PTR proposals and reverted changes are excluded.
The values below show isolated skill ranks 1 and 20, without synergy investment, bonus levels, equipment or mastery bonuses. The interactive calculator incorporates your saved bonuses and supported synergy/mastery contributions. Damage refers only to the calculated skill component. Outputs needing monster, weapon, missile or special game context are explicitly marked rather than guessed. They are not promises of in-game damage.
Necromancer · 30 skills · Curses / Poison and Bone Skills / Summoning Skills
Curses
Amplify Damage · unlock level 1
Curses enemies to reduce their physical resistance. In-game row 1, column 2. Maximum invested points: 20. Prerequisites: None.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Duration: second | 8 | 65 |
| Radius: yard | 2 | 14.67 |
| Mana Cost | 4 | 4 |
| Damage Taken: % | 100 | 100 |
No direct skill-definition change between these released snapshots.
Dim Vision · unlock level 6
Curses susceptible enemies to sharply limit their awareness and ranged actions. In-game row 2, column 1. Maximum invested points: 20. Prerequisites: None.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Duration: second | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Radius: yard | 2.67 | 15.33 |
| Mana Cost | 9 | 9 |
No direct skill-definition change between these released snapshots.
Weaken · unlock level 6
Curses enemies to reduce the damage of their attacks. In-game row 2, column 3. Maximum invested points: 20. Prerequisites: Amplify Damage.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Duration: second | 14 | 59.6 |
| Radius: yard | 6 | 18.67 |
| Enemy Damage: % | -33 | -52 |
| Mana Cost | 4 | 4 |
No direct skill-definition change between these released snapshots.
Iron Maiden · unlock level 12
Curses enemies so their melee physical attacks return damage to them. In-game row 3, column 2. Maximum invested points: 20. Prerequisites: Amplify Damage.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Duration: second | 12 | 57.6 |
| % damage returned | 200 | 675 |
| Mana Cost | 5 | 5 |
| Radius: yard | 4.67 | 4.67 |
No direct skill-definition change between these released snapshots.
Terror · unlock level 12
Curses susceptible enemies to flee. In-game row 3, column 3. Maximum invested points: 20. Prerequisites: Weaken.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Duration: second | 8 | 27 |
| Mana Cost | 7 | 7 |
| Radius: yard | 2.67 | 2.67 |
No direct skill-definition change between these released snapshots.
Confuse · unlock level 18
Curses susceptible enemies so they may attack other nearby monsters. In-game row 4, column 1. Maximum invested points: 20. Prerequisites: Dim Vision.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Duration: second | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Radius: yard | 4 | 16.67 |
| Mana Cost | 13 | 13 |
No direct skill-definition change between these released snapshots.
Life Tap · unlock level 18
Curses enemies so successful eligible physical attacks against them restore the attacker's life. In-game row 4, column 2. Maximum invested points: 20. Prerequisites: Iron Maiden.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Duration: second | 16 | 61.6 |
| Radius: yard | 2.67 | 15.33 |
| Mana Cost | 9 | 9 |
| Heals: % of attack damage | 50 | 50 |
No direct skill-definition change between these released snapshots.
Attract · unlock level 24
Makes a susceptible enemy a target for attacks from other monsters. In-game row 5, column 1. Maximum invested points: 20. Prerequisites: Confuse.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Duration: second | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Mana Cost | 17 | 17 |
| Radius: yard | 6 | 6 |
No direct skill-definition change between these released snapshots.
Decrepify · unlock level 24
Curses enemies to slow them, weaken their attacks and reduce physical resistance. In-game row 5, column 3. Maximum invested points: 20. Prerequisites: Terror.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 11 | 11 |
| Duration: second | 4 | 15.4 |
| Radius: yard | 4 | 4 |
| Run/Walk Speed: % | -50 | -50 |
| Attack Speed: % | -50 | -50 |
| Damage Taken: % | 0 | 0 |
| Enemy Damage: % | -50 | -50 |
No direct skill-definition change between these released snapshots.
Lower Resist · unlock level 30
Curses enemies to reduce elemental and poison resistance; immunity rules still apply. In-game row 6, column 2. Maximum invested points: 20. Prerequisites: Life Tap, Decrepify.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Duration: second | 20 | 58 |
| Radius: yard | 4.67 | 17.33 |
| Resist All: % | -31 | -62 |
| Mana Cost | 22 | 22 |
No direct skill-definition change between these released snapshots.
Poison and Bone Skills
Teeth · unlock level 1
Launches a fan of small magic-damage projectiles. In-game row 1, column 2. Maximum invested points: 20. Prerequisites: None.
Invested-point references in the released calculations: Bone Wall, Bone Prison, Bone Spear, Bone Spirit. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 3 | 12.5 |
| Magic Damage: - (skill component, synergies included) | 2–4 | 23–31 |
| teeth | 2 | 21 |
No direct skill-definition change between these released snapshots.
Bone Armor · unlock level 1
Creates a protective barrier that absorbs physical damage. In-game row 1, column 3. Maximum invested points: 20. Prerequisites: None.
Invested-point references in the released calculations: Bone Wall, Bone Prison. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 11 | 30 |
| Absorbs damage | 20 | 305 |
No direct skill-definition change between these released snapshots.
Poison Dagger · unlock level 6
Adds sustained poison damage and attack rating to a dagger attack. In-game row 2, column 1. Maximum invested points: 20. Prerequisites: None.
Invested-point references in the released calculations: Poison Explosion, Poison Nova. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 3 | 7.75 |
| over second | 2 | 9.6 |
| Poison Damage: - (skill component, synergies included) | 7–15 | 540–581 |
| Attack Rating: % | 0 | 0 |
No direct skill-definition change between these released snapshots.
Corpse Explosion · unlock level 6
Detonates a corpse to deal area physical and fire damage based on the corpse's life. In-game row 2, column 2. Maximum invested points: 20. Prerequisites: Teeth.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 15 | 34 |
| Radius: yard | 2.67 | 9 |
| Damage: -% of corpse Life (skill component, synergies included) | 70–120 | 70–120 |
No direct skill-definition change between these released snapshots.
Bone Wall · unlock level 12
Creates a temporary wall of bones that blocks movement and attacks. In-game row 3, column 3. Maximum invested points: 20. Prerequisites: Bone Armor.
Invested-point references in the released calculations: Bone Armor, Bone Prison. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Life | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Mana Cost | 17 | 17 |
| Duration: second | 24 | 24 |
No direct skill-definition change between these released snapshots.
Poison Explosion · unlock level 18
Consumes a corpse to release a poison cloud. In-game row 4, column 1. Maximum invested points: 20. Prerequisites: Poison Dagger, Corpse Explosion.
Invested-point references in the released calculations: Poison Dagger, Poison Nova. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| over second | 2 | 9.6 |
| Poison Damage: - (skill component, synergies included) | 25–75 | 1170–1410 |
| Mana Cost | 8 | 8 |
No direct skill-definition change between these released snapshots.
Bone Spear · unlock level 18
Fires a piercing spear of magic damage through enemies. In-game row 4, column 2. Maximum invested points: 20. Prerequisites: Corpse Explosion.
Invested-point references in the released calculations: Bone Wall, Bone Prison, Teeth, Bone Spirit. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 7 | 11.75 |
| Magic Damage: - (skill component, synergies included) | 16–24 | 192–204 |
No direct skill-definition change between these released snapshots.
Bone Prison · unlock level 24
Surrounds a selected target or location with a temporary enclosure of bones. In-game row 5, column 3. Maximum invested points: 20. Prerequisites: Bone Wall, Bone Spear.
Invested-point references in the released calculations: Bone Armor, Bone Wall. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 27 | 8 |
| Life | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Duration: second | 24 | 24 |
No direct skill-definition change between these released snapshots.
Poison Nova · unlock level 30
Releases a ring that applies poison to nearby enemies. In-game row 6, column 1. Maximum invested points: 20. Prerequisites: Poison Explosion.
Invested-point references in the released calculations: Poison Dagger, Poison Explosion. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| over second | 2 | 2 |
| Poison Damage: - (skill component, synergies included) | 50–90 | 400–440 |
| Mana Cost | 20 | 20 |
No direct skill-definition change between these released snapshots.
Bone Spirit · unlock level 30
Launches a magic-damage spirit that seeks an enemy. In-game row 6, column 2. Maximum invested points: 20. Prerequisites: Bone Spear.
Invested-point references in the released calculations: Bone Wall, Bone Prison, Teeth, Bone Spear. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 12 | 21.5 |
| Magic Damage: - (skill component, synergies included) | 20–30 | 340–369 |
No direct skill-definition change between these released snapshots.
Summoning Skills
Skeleton Mastery · unlock level 1
Passively improves raised skeletons and revived monsters. In-game row 1, column 1. Maximum invested points: 20. Prerequisites: Raise Skeleton.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Monsters: Damage: % | 10 | 200 |
| Monsters: Life: % | 5 | 100 |
| Magi: Improved Missile Damage | 0 | 20 |
| Magi: Life | 8 | 160 |
| Skeletons: Damage | 2 | 40 |
| Skeletons: Life | 8 | 160 |
No direct skill-definition change between these released snapshots.
Raise Skeleton · unlock level 1
Uses a corpse to create a melee skeleton companion. In-game row 1, column 3. Maximum invested points: 20. Prerequisites: None.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 6 | 25 |
| skeleton total | 1 | 8 |
| Defense | 20 | 305 |
| Damage: % | 0 | 119 |
| Attack Rating | 20 | 305 |
| Life | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Damage: - | Needs additional game context — not calculated | Needs additional game context — not calculated |
No direct skill-definition change between these released snapshots.
Clay Golem · unlock level 6
Creates a durable golem whose attacks can slow enemies. In-game row 2, column 2. Maximum invested points: 20. Prerequisites: None.
Invested-point references in the released calculations: Fire Golem, Iron Golem, Blood Golem. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 15 | 72 |
| Damage: - | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Slows Enemies: % | 11 | 63 |
| Attack Rating | 20 | 400 |
| Life | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Defense | 100 | 100 |
| Attack Rating | 60 | 440 |
No direct skill-definition change between these released snapshots.
Golem Mastery · unlock level 12
Passively improves the life and movement of golems. In-game row 3, column 1. Maximum invested points: 20. Prerequisites: Clay Golem.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Run/Walk Speed: % | 6 | 33 |
| Attack Rating | 25 | 500 |
| Life: % | 20 | 400 |
No direct skill-definition change between these released snapshots.
Raise Skeletal Mage · unlock level 12
Uses a corpse to create a skeleton that attacks with elemental bolts. In-game row 3, column 3. Maximum invested points: 20. Prerequisites: Raise Skeleton.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 8 | 27 |
| skeleton mage | 1 | 8 |
| Defense | 10 | 200 |
| Life | Needs additional game context — not calculated | Needs additional game context — not calculated |
No direct skill-definition change between these released snapshots.
Blood Golem · unlock level 18
Creates a golem with life-stealing attacks. In-game row 4, column 2. Maximum invested points: 20. Prerequisites: Clay Golem.
Invested-point references in the released calculations: Clay Golem, Fire Golem, Iron Golem. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 25 | 82 |
| Damage: - | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Converts % damage to life | 86 | 138 |
| Life | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Defense | 120 | 120 |
| Attack Rating | 60 | 60 |
No direct skill-definition change between these released snapshots.
Summon Resist · unlock level 24
Passively improves elemental resistance for applicable summoned companions. In-game row 5, column 1. Maximum invested points: 20. Prerequisites: Golem Mastery.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Resist All: % | 28 | 66 |
No direct skill-definition change between these released snapshots.
Iron Golem · unlock level 24
Transforms an eligible item into a golem that inherits applicable item properties. In-game row 5, column 2. Maximum invested points: 20. Prerequisites: Blood Golem.
Invested-point references in the released calculations: Clay Golem, Fire Golem, Blood Golem. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Defense | 35 | 700 |
| % damage returned | 0 | 0 |
| Thorns damage | Yes | Yes |
| Mana Cost | 35 | 35 |
| Defense | 175 | 840 |
| Damage: - | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Attack Rating | 80 | 80 |
| Life | Needs additional game context — not calculated | Needs additional game context — not calculated |
No direct skill-definition change between these released snapshots.
Fire Golem · unlock level 30
Summons a fire-based golem with a damaging fire aura. In-game row 6, column 2. Maximum invested points: 20. Prerequisites: Iron Golem.
Invested-point references in the released calculations: Clay Golem, Iron Golem, Blood Golem. Their effects depend on the individual skill formula.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Mana Cost | 50 | 202 |
| Holy Fire: - | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Fire Damage: - | Needs additional game context — not calculated | Needs additional game context — not calculated |
| Absorbs % fire damage | 36 | 88 |
| Defense | 200 | 200 |
| Attack Rating | 120 | 120 |
| Life | Needs additional game context — not calculated | Needs additional game context — not calculated |
No direct skill-definition change between these released snapshots.
Revive · unlock level 30
Temporarily raises a slain monster to fight as a companion. In-game row 6, column 3. Maximum invested points: 20. Prerequisites: Raise Skeletal Mage, Iron Golem.
| Skill component | Rank 1 | Rank 20 |
|---|---|---|
| Monsters | 1 | 20 |
| Mana Cost | 45 | 45 |
| Duration: second | 180 | 180 |
| Damage: % | 0 | 0 |
| Life: % | 200 | 200 |
No direct skill-definition change between these released snapshots.
Verification and limitations
Skill identities, coordinates, unlock requirements and native formulas come from pinned released extracts. Native calculation data does not completely describe every runtime behavior. Special-context outputs are not calculated until their interpretation is verified. The historical comparison currently covers two released snapshots, not every past patch or PTR.
Previous released snapshot: 3.2.92777
Other class skill trees
- Amazon skills and synergies — Bow and Crossbow Skills / Passive and Magic Skills / Javelin and Spear Skills
- Assassin skills and synergies — Traps / Shadow Disciplines / Martial Arts
- Barbarian skills and synergies — Combat Skills / Masteries / Warcries
- Druid skills and synergies — Summoning Skills / Shape Shifting Skills / Elemental Skills
- Necromancer skills and synergies — Curses / Poison and Bone Skills / Summoning Skills
- Paladin skills and synergies — Combat Skills / Offensive Auras / Defensive Auras
- Sorceress skills and synergies — Fire Skills / Lightning Skills / Cold Skills
- Warlock skills and synergies — Demon Skills / Eldritch Skills / Chaos Skills
Related Diablo 2 planning tools
Runeword recipes · Unique items · Set bonuses · Socketed bases · Cube crafting recipes · Gem effects and materials · Acts, bosses and Terror Zones