Difference between revisions of "Poison Damage"

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Latest revision as of 07:54, 17 September 2026

Diablo II Notation Basic Class Skill Item Ally Quest Area Monster Tale
Attribute Unit Animation Attack Damage Death
Crushing Blow Deadly Strike Enhanced Minimum Maximum Adds Damage Damage + % Damage
to Demons to Undead Magic Fire Lightning Cold Poison Skill Damage
ATD/ATLD DR/MDR Resistance Maximum Enemy Resist Sunder Immune Absorb
Poison damage overlay

Poison Damage normally causes a target to turn green when poisoned, a state which stops damage regeneration and can apply poison damage over the state's length. However, if cold length or Holy Freeze are also applied then the target remains or turns blue.

  • Damage of multiple types can be applied by the same attack, but only one damage overlay is displayed at a time: this means that poison damage can still be applied even if the only overlay displayed is for fire, lightning or cold damage.
  • It is not added to Smite or Lightning Bolt.
  • While damage is displayed in points and length in seconds, both are calculated and applied using more precise units of measurement: each point is divided into 1/256ths, while each second is divided into 25 frames. [1]
  • Targets are poisoned if as little as 1/256 poison damage is applied per frame.
  • Poison damage is displayed as the total damage applied over its length, but it's calculated by applying its 1/256 damage rate for a specified number of frames: a Toxic Small Charm applies poison damage at a rate of 205/256 for 125 frames, which is displayed as 100 Poison Damage Over 5 Seconds (125 * 205/256 over 125/25).
  • Poison damage from multiple attacks doesn't sum: if a target is already poisoned, then the rate and length of that poison will be overwritten by that of any subsequent attack which has an equal or greater rate. Rates are compared after all modifiers have been applied. [2]
  • When player, mercenary or pet applies poison to a poisoned monster, their poison is applied for one frame instead of the current poison: if their poison has an equal or greater rate, it then overwrites the current poison and it gets applied for its length; if their poison has a lower rate, the current poison then continues for its remaining length. Rates are compared after all modifiers have been applied. More generally, poison damage does not get applied in frames in which any damage from other sources is applied (although poison and Open Wounds both apply simultaneously). [3] [4]
    • In online modes (LoD and D2R, Expansion and Classic, LD and NLD) any damage from other source stops poison damage for additional 7 frames after taking damage. Builds relying on poison damage should refrain from utilizing other damage sources, such as Raise Skeleton. This mechanic is also applied to damage regeneration.[5]
  • When using Whirlwind while equipping two weapons with the same attack rate against a single target (which can result in poison damage being applied by both attacks in the same frame), each attack applies one frame of its poison damage, then the highest rate is applied for its remaining length. When equal rates are applied, the length of the last is applied (whichever is the secondary weapon for that attack check). [6]
  • When monsters apply poison to a player, mercenary or pet, their poison is applied for one frame as well as the current poison: if their poison has an equal or greater rate, it then overwrites the current poison and it gets applied for its length; if their poison has a lower rate, the current poison then continues for its remaining length. Rabies and Poison Creeper can also apply additional frames of poison damage when applied to more than one monster.
  • Poison damage can kill monsters, mercenaries and pets but will only reduce players to 1 life (although poison damage from a subsequent attack would kill them if they remained on 1 life). [7]


Item

If a single item has both a prefix and a suffix applying poison damage, then the rates and lengths of both are simply added. [8]


Source Poison Damage Frame Rate (1/256) Frames
Min Max Seconds Min Max
Toxic Small Charm 100 100 5 205 205 125
Small Charm of Anthrax 50 50 6 86 86 150
Toxic Small Charm of Anthrax 313 313 11 291 291 275


Displayed damage is rounded to the nearest point, although it should always be rounded down. When multiple items applying poison damage are equipped, then the rates are added and the lengths are averaged. [9]


Source Poison Damage Frame Rate (1/256) Frames
Min Max Seconds Min Max
Toxic Small Charm of Anthrax 313 313 11 291 291 275
Blackbog's Sharp Cinquedeas 488 488 10 500 500 250
Perfect Emerald 100 100 7.16 143 143 179
Total 934 934 704


  • 853 188/256 (234 * 934/256) poison damage over 9.36 ( [704/3] /25) seconds is applied (values are rounded down to the nearest 1/256 and frame). Gems, jewels and runes all count as separate items, even if they're socketed in a single item. [10]
  • Length is calculated differently when multiple items applying poison damage are used with skills that apply less than 100% weapon damage.


Charm

Small Charm

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Min Alvl
Min Max Seconds Min Max
15 15 3 52 52 75 Septic Small Charm 13 18
50 50 4 128 128 100 Foul Small Charm 31 39
100 100 5 205 205 125 Toxic Small Charm 55 63
175 175 6 299 299 150 Pestilent Small Charm 80 88
6 6 3 21 21 75 Small Charm of Blight 6 9
15 15 4 39 39 100 Small Charm of Venom 15 20
25 25 5 52 52 125 Small Charm of Pestilence 24 32
50 50 6 86 86 150 Small Charm of Anthrax 36 44


Large Charm

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Min Alvl
Min Max Seconds Min Max
10 10 3 35 35 75 Septic Large Charm 6 9
30 30 4 77 77 100 Foul Large Charm 19 26
90 90 5 185 185 125 Toxic Large Charm 38 46
175 175 6 299 299 150 Pestilent Large Charm 58 66
6 6 3 21 21 75 Large Charm of Blight 3 5
15 15 4 39 39 100 Large Charm of Venom 9 13
25 25 5 52 52 125 Large Charm of Pestilence 17 23
50 50 6 86 86 150 Large Charm of Anthrax 25 33


Grand Charm

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Min Alvl
Min Max Seconds Min Max
5 5 3 18 18 75 Septic Grand Charm 1 1
15 15 4 39 39 100 Foul Grand Charm 9 12
50 50 5 103 103 125 Toxic Grand Charm 20 27
100 100 6 171 171 150 Pestilent Grand Charm 34 42
6 6 3 21 21 75 Grand Charm of Blight 1 1
15 15 4 39 39 100 Grand Charm of Venom 4 6
25 25 5 52 52 125 Grand Charm of Pestilence 10 14
50 50 6 86 86 150 Grand Charm of Anthrax 15 21


Any socket

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Min Alvl
Min Max Seconds Min Max
20 20 2 103 103 50 Jewel of Envy 1 1


Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
37 37 2 187 187 50 Rainbow Facet Jewel 49 No
95 95 1 975 975 25 Defender's Bile Colossal Jewel (RotW) 75 No


Helm

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
80 80 8 102 102 200 Wormskull Bone Helm 21 No


Circlet

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Min Alvl
Min Max Seconds Min Max
6 6 2 31 31 50 Septic Circlet 1 1
7 7 3 24 24 75 Circlet of Blight 3 5
21 21 4 54 54 100 Circlet of Venom 11 15
50 50 5 103 103 125 Circlet of Pestilence 18 25


Amulet

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Min Alvl
Min Max Seconds Min Max
50 50 3 171 171 75 Amulet of Blight 33 45


Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
40 40 4 102 102 100 Atma's Scarab Amulet 60 No


Body armor

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
24 34 2 125 175 50 Dark Adherent Dusk Shroud 49 No


Weapon

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
10 10 3 34 34 75 Chipped Emerald in socket 1 No
20 20 4 51 51 100 Flawed Emerald in socket 5 No
40 40 5 82 82 125 Emerald in socket 12 No
60 60 6.08 101 101 152 Flawless Emerald in socket 15 No
100 100 7.16 143 143 179 Perfect Emerald in socket 18 No
75 75 5 154 154 125 Tal Rune in socket 17 No
273 273 6 466 466 150 Venom weapon 49 No


Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Min Alvl
Min Max Seconds Min Max
6 6 2 31 31 50 Septic Weapon 1 1
12 12 3 41 41 75 Foul Weapon 7 10
80 80 4 205 205 100 Corrosive Weapon 15 20
150 150 5 308 308 125 Toxic Weapon 26 35
275 275 6 470 470 150 Pestilent Weapon 37 50
2 2 2 8 8 50 Weapon of Blight 1 1 1-4
7 7 3 24 24 75 Weapon of Blight 2 3 5
21 21 4 54 54 100 Weapon of Venom 2 11 15
50 50 5 103 103 125 Weapon of Pestilence 2 18 25
100 100 6 171 171 150 Weapon of Anthrax 2 25 33

1 Excluding scepters, staves and orbs
2 Excluding rods (scepters, staves and wands) and orbs

Missile weapon

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
75 75 5 154 154 125 Edge missile weapon 25 Yes (LoD only)
75 75 5 154 154 125 Insight missile weapon D2R icon.png 27 No (D2R only)


Crossbow
Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
30 30 3 102 102 75 Ichorsting Crossbow 18 No
150 150 8 192 192 200 Pus Spitter Siege Crossbow 36 No


Axe

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
38 38 3 128 128 75 Rakescar War Axe 27 No
250 250 10 256 256 250 Guardian Naga Naga 48 No


Claw

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
75 75 5 154 154 125 Pattern claw D2R icon.png 23 No (D2R only)


Dagger

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
180 180 4 460 460 100 The Jade Tan Do Kris 19 No
488 488 10 500 500 250 Blackbog's Sharp Cinquedeas 38 No


Hammer

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
204 204 6 349 349 150 Immortal King's Stone Crusher Ogre Maul (5 items) 76 No


Javelin

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
293 293 10 300 300 250 Gargoyle's Bite Winged Harpoon 70 No


Polearm

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
75 75 5 154 154 125 Insight polearm 27 Yes (LoD only)


Scepter

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
75 75 5 154 154 125 Holy Thunder scepter 21 No
160 160 4 409 409 100 The Fetid Sprinkler Holy Water Sprinkler 38 No


Spear

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
325 325 10 333 333 250 Viperfork Mancatcher 71 No
394 394 10 403 403 250 Arioc's Needle Hyperion Spear 81 No


Staff

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
12 12 3 40 40 75 Serpent Lord Long Staff 9 No
75 75 5 154 154 125 Insight staff 27 Yes (LoD only)


Sword

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
28 56 6 48 96 150 Hellplague Long Sword 22 No
75 75 5 154 154 125 Spirit sword 25 Yes (LoD only)
113 113 6 192 192 150 Blacktongue Bastard Sword 26 No
50 50 2 255 255 50 Bul-Kathos' Tribal Guardian Mythical Sword 66 No
300 300 8 384 384 200 Plague Bearer Rune Sword 41 No
250 250 6 426 426 150 The Vile Husk Tusk Sword 44 No


Shield

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
80 80 4 204 204 100 Radament's Sphere Ancient Shield 50 No


Shrunken head

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Min Alvl
Min Max Seconds Min Max
2 7 3 8 24 75 Shrunken head - 1
5 14 3 16 48 75 Shrunken head - 15
13 28 4 32 72 100 Shrunken head - 25
25 50 4 64 128 100 Shrunken head - 33


  • One of the above always spawns on any shrunken head which isn't Unique or Set quality.
  • Required Level (Rlvl) only applies when a shrunken head is magic or rare quality.


Ring

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Min Alvl
Min Max Seconds Min Max
50 50 3 171 171 75 Ring of Blight 33 45


Belt

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
12 12 3 40 40 75 Snakecord Light Belt 12 No


Gloves

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
9 11 3 30 36 75 Sander's Taboo Heavy Gloves 28 No
60 60 4 153 153 100 Venom Grip Demonhide Gloves 29 No


Set bonus

Poison Damage Frame Rate (1/256) Frames Source Min Rlvl Ladder
Min Max Seconds Min Max
5 9 3 16 32 75 Berserker's Arsenal (Full) 3 No
8 8 3 25 25 80 Infernal Tools (2 items) 5 No
22 22 3 75 75 75 The Disciple (3 items) 49 No


Skill

  • Skill level is set when the player uses the skill: adding or removing skill bonuses won't have any effect on rate or length if there's a delay between using the skill and applying poison damage.
  • While skills are normally treated as separate sources of poison damage whose rates (and accompanying lengths) compete with those of other skills and items, Poison Dagger and the javelins (but not the clouds) of Poison Javelin and Plague Javelin combine skill damage rate with any item rates added to attack damage; the length for which this combined rate is applied is calculated by summing skill and item lengths, and dividing by the number of items. [14]


Source Poison Damage Frame Rate (1/256) Frames
Min Max Seconds Min Max
Toxic Small Charm of Anthrax 313 313 11 291 291 275
Blackbog's Sharp Cinquedeas 488 488 10 500 500 250
Perfect Emerald 100 100 7.16 143 143 179
Level 30 Poison Dagger 12,383 12,909 13.6 9324 9720 340
Total 10258 10654 1044


Min poison0 = 348 * 10258/256
= 13,944
Max poison0 = 348 * 10654/256
= 14,482
Seconds0 = [1,044/3] /25
= 13.92


  • If the only item used were Blackbog's Sharp Cinquedeas, 9824-10220 rate for 590 ((250+340)/1) frames would apply 22,641-23,553 poison damage over 23.6 (590/25) seconds. Although the rate is lower with only one item, the length can be significantly longer and results in far more damage from a single stab.
  • Character screen does not display total poison damage correctly when skill and item rates combine: it simply adds total poison damage from items to skill damage. [15]


Amazon

Skill Skill level Min Rlvl
1-8 9-16 17-22 23-28 > 28
Poison Javelin 1 2 Min 16*slvl + 16 32*slvl - 112 48*slvl - 368 64*slvl - 720 96*slvl - 1616 6
Max 16*slvl + 32 36*slvl - 128 52*slvl - 384 68*slvl - 736 84*slvl - 1184
+% 12*Plague Javelin.blvl
Sec (50*slvl + 150) /25
Plague Javelin 2 Min 48*slvl + 32 96*slvl - 352 160*slvl - 1376 320*slvl - 4896 480*slvl - 9376 18
Max 48*slvl + 80 96*slvl - 304 160*slvl - 1328 320*slvl - 4848 480*slvl - 9328
+% 10*Poison Javelin.blvl
Sec (10*slvl + 65) /25

1 Level > 36 Poison Javelin displays higher minimum than maximum damage because the minimum rate added per level for level > 28 is higher than the maximum rate added. When this occurs, the minimum damage effectively becomes the maximum and the maximum damage becomes the minimum. [16]
2 Javelins apply combined rates of skill and attack poison damage from items and Venom, over their combined lengths divided by the number of items (combined skill length only when Venom is cast). Character screen simply adds total attack poison damage to skill damage. [17]

Assassin

Skill Skill level Min Rlvl
1-8 9-16 17-22 23-28 > 28
Venom Min 384*slvl + 1152 512*slvl + 128 640*slvl - 1920 768*slvl - 4736 896*slvl - 8320 30
Max 384*slvl + 1664 512*slvl + 640 640*slvl - 1408 768*slvl - 4224 896*slvl - 7808
Sec 0.4 (10/25)


Venom's damage rate is added to those from items added to attacks for its 4*slvl + 116 second duration. However, its 10 frame length overrides those of any items.


Source Poison Damage Frame Rate (1/256) Frames
Min Max Seconds Min Max
Toxic Small Charm of Anthrax 313 313 11 291 291 275
Blackbog's Sharp Cinquedeas 488 488 10 500 500 250
Perfect Emerald 100 100 7.16 143 143 179
Level 15 Venom 305 325 0.4 7808 8320 10
Total 8742 9254 10


Min poison0 = 10 * 8742/256
= 341
Max poison0 = 10 * 9254/256
= 361
Seconds0 = 10/25
= 0.4


Venom's length does not override those of the skills Poison Dagger, Poison Javelin and Plague Javelin. Casting Venom can thus significantly increase the rate applied by these skills while not reducing length. Since Venom effectively creates a single source which sums the rates of Venom and items but which only applies for Venom's length, the length is the sum of the skill length and that of Venom. [18]


Source Poison Damage Frame Rate (1/256) Frames
Min Max Seconds Min Max
Toxic Small Charm of Anthrax 313 313 11 291 291 275
Blackbog's Sharp Cinquedeas 488 488 10 500 500 250
Perfect Emerald 100 100 7.16 143 143 179
Level 30 Poison Dagger 12,383 12,909 13.6 9324 9720 340
Level 15 Venom 305 325 0.4 7808 8320 10
Total 18066 18974 350


Min poison0 = 350 * 18066/256
= 24,699
Max poison0 = 350 * 18974/256
= 25,941
Seconds = 350/25
= 14


Character screen does not display total poison damage correctly when skill, item and Venom rates combine: it correctly calculates total poison damage from items and Venom, but then simply adds this to skill damage. [19]

Druid

Skill Skill level Min Rlvl
1-8 9-16 17-22 23-28 > 28
Rabies Min 32*slvl + 16 40*slvl - 48 56*slvl - 304 88*slvl - 1008 128*slvl - 2128 18
Max 32*slvl + 80 40*slvl + 16 56*slvl - 240 88*slvl - 944 128*slvl - 2064
+% 18*Poison Creeper.blvl
Sec (10*slvl + 90) /25


Necromancer

Skill Skill level Min Rlvl
1-8 9-16 17-22 23-28 > 28
Poison Dagger 1 Min 20*slvl + 16 30*slvl - 64 40*slvl - 224 46*slvl - 356 52*slvl - 524 6
Max 20*slvl + 60 30*slvl - 20 40*slvl - 180 46*slvl - 312 52*slvl - 480
+% 20 * Poison Explosion.blvl+Poison Nova.blvl
Sec (10*slvl + 40) /25
Poison Explosion Min 32*slvl + 96 64*slvl - 160 96*slvl - 672 128*slvl - 1376 160*slvl - 2272 18
Max 32*slvl + 352 64*slvl + 96 96*slvl - 416 128*slvl - 1120 160*slvl - 2016
+% 15 * Poison Dagger.blvl+Poison Nova.blvl
Sec (10*slvl + 40) /25
Poison Nova Min 64*slvl + 192 96*slvl - 64 144*slvl - 832 224*slvl - 2592 256*slvl - 3488 30
Max 64*slvl + 400 96*slvl + 144 144*slvl - 624 224*slvl - 2384 256*slvl - 3280
+% 10 * Poison Dagger.blvl+Poison Explosion.blvl
Sec 2 (50/25)

1 Poison Dagger applies combined rates of skill and attack poison damage from items and Venom, over their combined lengths divided by the number of items (combined skill length only when Venom is cast). Character screen simply adds total attack poison damage to skill damage. [20]

Pet

Druid

Pet Skill level Min Rlvl
1-8 9-16 17-22 23-28 > 28
Poison Creeper Min 7*slvl + 5 12*slvl - 35 15*slvl - 83 17*slvl - 127 19*slvl - 183 1
Max 7*slvl + 9 12*slvl - 31 15*slvl - 79 17*slvl - 123 19*slvl - 179
Sec 4 (100/25)


Necromancer

Pet Missile level Min Rlvl
1-8 9-16 17-22 23-28 > 28
Necromage Min lvl+5 2*lvl - 3 4*lvl - 35 6*lvl - 79 8*lvl - 135 12
Max lvl+5 2*lvl - 3 4*lvl - 35 6*lvl - 79 8*lvl - 135
Sec (250*lvl + 250) /25
Lvl if(slvl < 4 , 0 , [slvl-2 /2] ) + Skeleton Mastery.slvl


Monster

Monster Normal Nightmare Hell
Poison Enchanted monster Min [MonLvl*0.66] * (mlvl*10 + 300) /256 [MonLvl*0.66] * (mlvl*10 + 300) /256 [MonLvl*0.66] * (mlvl*10 + 300) /256
Max MonLvl * (mlvl*10 + 300) /256 MonLvl * (mlvl*10 + 300) /256 MonLvl * (mlvl*10 + 300) /256
Sec (mlvl*0.4 + 12) /25 (mlvl*0.4 + 12) /25 (mlvl*0.4 + 12) /25
Poison Enchanted minion Min [MonLvl*0.33] * (mlvl*10 + 300) /256 [MonLvl*0.33] * (mlvl*10 + 300) /256
Max [MonLvl*0.66] * (mlvl*10 + 300) /256 [MonLvl*0.66] * (mlvl*10 + 300) /256
Sec (mlvl*0.4 + 12) /25 (mlvl*0.4 + 12) /25
Spectral Hit Unique Min [MonLvl*0.66] * 40/256 [MonLvl*0.66] * 40/256 [MonLvl*0.66] * 40/256
Max MonLvl * 40/256 MonLvl * 40/256 MonLvl * 40/256
Sec 1.6 (40/25) 1.6 (40/25) 1.6 (40/25)

[21]


Poison Enchanted monster can also fire invisible missiles:


Stat Value
Minimum Poison Damage 6*mlvl * 800/256
Maximum Poison Damage (6*mlvl + 10) * 800/256
Length (Seconds) 32 (800/25)

[22]


Poison damage and length is added to attack damage of some monsters, while others can fire missiles or use skills applying it. Monster poison attack damage and length is calculated as follows:


Stat Value
Frame Rate (1/256) [ [MonLvl * ElD/100] * (15 + # players) /16] * 10
Frames [ElDur * (15 + # players) /16] * 2


ElD and ElDur are the entries in the relevant ElMin/MaxD and ElDur columns of MonStats.txt respectively. [23]

Calculation

Download


Online


Below is a summary of all the steps in the calculation of poison damage. To express total damage in points applied over a length in seconds:


Points = [ Rate * Frames /256 ] Seconds = Frames /25
0
Rate = [ ( [ [B * S] * M] + [ (I + [V * M] ) * M] ) * R] Frames = [F * R]
0
[ ] Round down
B Skill rate
I Item rates
V Venom rate
M +X% Poison Skill Damage M = (100+X) /100
S +X% poison damage synergy S = (100+X) /100
R Resist R = (100-X) /100
If P >= 100 and P - [L/5] < 100
then X = P - [L/5]
else R = 0
If P < 100
then X = max(P - (L+E) , -100)
P Poison Resist X% P = X
L Lower Resist (PR -X%) L = X
E -X% EPR E = X
F Items = item lengths / items
Items + Skill = (skill + item lengths) / items
Items + Venom = Venom length
Skill + Venom = skill + Venom lengths
R Resist R = (100-X) /100
If P < 100
then X = max(P-E , -100)
else F = 1
P Poison Length Reduced by X% P = X
E -X% Enemy Poison Resistance E = X


  • Ideally damage is calculated measuring rate in 1/256ths and length in frames. It's also possible to calculate damage measuring rate in poison damage/second and length in seconds. However, the result will only be an approximation and rounding down should only be done at the end of the calculation for maximum accuracy.
  • If a single item has both a prefix and a suffix applying poison damage, then the rates and lengths of both are simply added.
  • Gems, jewels and runes all count as separate items, even if they're socketed in a single item.
  • Item and Venom rate are only added to the skill rates of Poison Dagger and the javelins (but not the clouds) of Poison Javelin and Plague Javelin. Character screen does not display total poison damage correctly when skill, item and Venom rates combine: it correctly calculates total poison damage from items and Venom, but then simply adds this to skill damage.
  • +% PSD isn't applied to item and Venom rate when applied by ranged attacks.
  • Length is calculated differently when multiple items applying poison damage are used with skills that apply less than 100% weapon damage.
    • Poison length = [sum of lengths / (sources - 1) ]
    • Poison length = sum of lengths
      • Blade Sentinel using two-handed weapon
      • Blade Fury using two-handed weapon


Reference
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