Blood Surge Necromancer Endgame Build Guide

• When Diablo 4 first released, Overpower was the most archaic system in the game. It basically didn't interact with the majority damage scaling systems.
• In Patch 1.2, OP was retooled to be a much more intuitive system, similar to Critical Strike and Vulnerable.
• Every attack has a natural 3% chance to Overpower.
• Overpowering checks the players current Life total and multiplies outgoing damage by up to 50%.
  • Example: If the player is at 50% of their total Life, they would get a 25% damage multiplier.
• You gain +1% additive Overpower damage for every 1% of your Base Life you have in Fortify.
  • If you have 150% of your Base Life in Fortify because you have more Maximum Life than your Base Life, you gain +300% Overpower Damage.
• You gain +1% additive Overpower damage for every 1% of your Base Life you have in Bonus Life.
  • Level 100 Necromancers have 7959 Base Life. If you have 20,000 Maximum Life, you have 12,041 Bonus Life above your Base Life.
  • These adds up to 150% Bonus Life in total, giving you +300% Overpower Damage.
• There are many sources in the game that say "You are guaranteed to Overpower on your next Skill use..." meaning that attack always Overpowers.

• First of all Blood Orbs are essential for your Essence sustain. Make sure to stutterstep around the battlefiel in between your Blood Surge casts to collect those and restore Essence through your Tempers on your Ring and Amulet.
• Soulrift grants an absurd amount of Essence while its active. Making Soulrift permanent through +xx% Soulrift Duration Tempers, Cooldown Reduction and Decrepify procs should be your first goal.
• Cruor's Embrace consumes Corpses which triggers Grim Harvest every time you consume a Corpse. To be able to keep the Corpse consumption going it is very important to create Corpses through Hewed Flesh or the natural way.
• Essence per Second on your Helm and Boots can be a very good alternative if you need a bit more Essence generation.
• If all else fails, replace Cadaverous with Voracious Rage.
• Ring of Starless Skies further helps solving Essence in the Mythic version of the build.

• Blood Surge has two damage instances (more with Aspects and Unique items). The first damage instance "drains" all monsters on the screen, then the "surge" damage instance occurs in a small ring around the Necromancer.
• If you "drain" from an enemy at all, you heal for 3% of your Maximum Life with Enhanced Blood Surge. If there are at least four targets, the heal is increased to 6%.
• After five successful "surges" have hit a target, the sixth time you cast Blood Surge the Skill's damage Overpowers due to Paranormal Blood Surge. The sixth cast increases your total cast total to one instead of zero. So it only takes five additional casts after to Overpower, and thereafter.

Abhorrent Decrepify

With your multiple sources of damage effects, Decrepify quickly lowers all active Cooldowns by one second and rewards aggressive gameplay. Get close to a group of crowd controlled enemies so your Skills hit as many targets as possible, with as many damage instances as possible.

• While the mechanics are signifantly more nuanced than this, and many things in game slightly obfuscate the truth, understanding Lucky Hit Chance is fairly simple.
  • With Advanced Tooltips activated in your Gameplay Settings, you can see a Skill's innate LHC.
  • Not every Skill has a LHC even though things may cause those Skills to deal damage.
  • A Skill must apply damage to a target to have a chance to trigger LHC.
  • LHC effects do not have LHC and can't trigger other LHC effects.
  • Skills check for LHC EVERY time they deal damage to ANY targets. There's no limit or "one per cast" mechanics.
• To calculate the chance of triggering something, you take your Skill's LHC, multiply that by (1 + (Total Bonus Lucky Hit Chance / 100)) and then multiply that by the Effect's LHC.
  • Blood Surge has an innate LHC of 20%.
  • The Mythic Variant gets 0% LHC Bonus, and Decrepify has a 15% chance to trigger Cooldown Reduction on your skills.
  • The equation is 12% * (1 + (0/100)) * 15% = 1.8%.

• Read up more on Lucky Hit Chance in our dedicated guide by Ava

• While all the exact mechanics are much more nuanced, there are two separate Attack Speed Bonus caps of +100% that apply to all builds for a total potential of +200%. For Necromancers, these two caps include:

Cap 1

• Attack Speed on Gear
• Attack Speed from Paragon Nodes
• Elixirs
• Kalan's Edict for Minions
• Golems - Bone Sacrifice
• Moonrise
• Artillery Shrine

Cap 2

• Accelerating
• Rapid
• Rathma's Chosen
• Reap
• Blood Lance
• Hemorrhage
• Howl from Below for Corpse Skills
• Blood Attack Speed Temper

• Read up more on Attack Speed in our dedicated guide by Ava.

Bosses are immune to Crowd Control (CC) effects and instead take Stagger Damage when hit by one. The amount of stagger damage dealt depends on the type of CC and is proportional to its duration. After being hit by a CC effect, the Boss will temporarily take less Stagger Damage from a CC of the same type.

Effectively, this means that when you're just spamming one type of CC you don't need to spam any more of it than what you need to keep a normal enemy permanently CC-d. To stagger the Boss quickly you need to use as many different types of CC as possible. After the Boss is staggered it gains a certain amount of stacking Stagger Damage Reduction for the rest of the fight:

• After 1st Stagger: 20%
• After 2nd Stagger: 40%
• After 3rd Stagger: 60%
• After 4th Stagger: 90%

Bosses naturally regain 1% of their Stagger HP every second and when that regen is combined with 90% Stagger Damage Reduction it becomes borderline impossible to Stagger the Boss again unless you bring a serious amount of crowd controls.