Devotion skill chance scaling and uptime

AuMidas · March 12, 2025, 1:44pm

gd-xr-wide
Have you ever wondered how to get the most out of devotions?

Here’s my research, since I couldn’t find this anywhere else on the Internet.

How to use this guide:

Select a devotion skill and note its base chance.
Match a class skill or item skill with its scaling tier.
Compare how the base chance is scaled with tier of the bound skill.

For example:
- 1. Rend has a 20% chance on attack
- 1. Judgment has tier [8] scaling
- 1. Hitting an enemy with Judgment results in a 100% chance to apply Rend

Devotion Skills base chances:

15%   Eldritch Fire, Rumor, Acid Spray, Will of Rattosh, Aetherfire, Falcon Swoop, Guardian's Gaze, Fissure
20%   Rend, Twin Fangs, Raise the Dead, Abominable Might, Shifting Sands, Bysmiel's Command, Howl of Mogdrogen, Ulzaad's Decree
25%   Elemental Storm, Arcane Bomb, Flame Torrent, Arcane Currents, Shepherd's Call, Shield Wall, Bull Rush, Scorpion Sting, Scorpion Sting
30%   Meteor Shower, Whirlpool
33%   Dryad's Blessing, Hungering Void
35%   Tsunami
100%  Cleansing Waters, Time Dilation, Elemental Seeker

Scaling for Chance on Attack devotion skills based on tier:

Tier   15%   20%   25%   30%   33%   35%
[0]    15    20    25    30    33    35
[2]    23    30    38    46    50    54 
[3]    27    36    45    54    59    63 
[4]    39    52    65    78    86    91 
[5]    40    53    66    80    88    93 
[6]    51    68    85    100   100   100
[7]    63    84    100   100   100   100
[8]    75    100   100   100   100   100
[9]    100   100   100   100   100   100
[*]    C     U     S     T     O     M

Tier key for class-based skills:

                  [2/3]    [4]      [5]      [6]               [7/8/9]
Arcanist       -                             TSS, CT[+]                     
Demolitionist  -           Gr       BWC[+]   SJ[+]             [7]CB        
Inquisitor     -                                               [7]HoG       
Necromancer    -  [2]RE                           BH, RS                    
Nightblade     -  [3]ABB                      PB[+], SS, RoS                
Oathkeeper     -  [3]AOM                      VM               [8]Jm
Occultist      -                                               [7]DB, DEE[+]
Shaman         -                             PS[+]             
Soldier        -           FW[+]             Bl, BA[+], FW[++] [9]WC 
Berserker      ?

Combined a few tiers to save horizontal space, pardon the abbreviations
[+] denotes skills that have had their cooldown lengthened from item- or skill-based modifiers.

Tier key for loot-based skills:

Most stuff:

Relics

`[6]`   Honor, Vire's Cascade (fan out)
`[*]`   56%, 75%, 94%, 100%, 100%, 100% - Terror
`[7]`   Doom, Doomforce (4s cd, aoe)

Medal Augments

`[4]`    dashes
`[6]`    dashes, leaps
`[7]`    a dash, leaps, teleports
`[8]`    a leap, teleports

Off-Hands

`[0]`    Obliteration, Call of the Storm                 
`[*]`    34%, 46%, 58%, 69%, 76%, 81% - SunSpot(+Mythical)                                      
`[*]`    87%, 100%, 100%, 100%, 100%, 100% - LightOfTruth(+Mythical)                                 
`[*]`    100%, 100%, 100%, 100%, 100%, 100% - Dominion, but it has a 25s cd

Shields

[3] Hyrian's Claw                                                                
[4] The Final Stop(Mythical), Hungering Maw
[6] The Final Stop, Shield Slam, Brutal Shield Slam(3s cd)
[7] Seigebreaker(+Mythical)

Components

[0] Behead, Decapitate, Biting Blades, Stormfire, Chain Lightning, Chillspikes
[0] Noxious Poison Bomb, Acid Purge, Aether Corruption, Solael's Flame
[4] Aether Tendril, Slam, Brutal Slam
[6] Sacred Strike

Amulets

[0] Mythical Peerless Eye of Beronath (big duration)
[6] Bane of Nuram'Siin
[7] Darkblaze Source
[9] Wilhelm's Wonderous Wargem

Two-Handed Weapons

[0] Arcanor(+Mythical)
[4] Shar'Zul's Worldeater(+Mythical), Stormreaver (AoE!)
[6] Valdun's Rifle(+Mythical) (kinda 100% tho with multihit)
[7] Stonefist Rebuke(Mythical)
[9] Stonefist Rebuke

Etc:

[6] Abolish Evil(+Mythical), Mythical Stomp Boots (Earthshatter/Grounbreakers)
[7] Krieg's Set(5)
[8] non-Mythical Stomp Boots

Medal Augment tiers and their cooldowns:

[6]  3.5  Emblem of Focused Rage
N/A  4    Emblem of the Agile Huntress
[7]  4    Emblem of the Charging Bull
[8]  5    Emblem of the Leaping Mantis
N/A  5    Emblem of the Riftstalker
[6]  3.5  Emblem of the Shadowy Assassin
[8]  5.5  Emblem of Dreeg's Vector
[7]  4    Emblem of Korvan Swiftness
[6]  3    Emblem of Rahn's Might
[8]  5.5  Glyph of Dreeg's Vector
[7]  4    Glyph of Korvan Swiftness
[6]  3    Glyph of Rahn's Might
[8]  5.5  Rune of Dreeg's Vector
[7]  4    Rune of Korvan Swiftness
[6]  3    Rune of Rahn's Might
[8]  5.5  Glyph of Arcane Insights
[6]  3    Glyph of Ashen Wastes
[8]  5.5  Glyph of Burning Rifts
N/A  3.6  Glyph of Disorder
[7]  4    Glyph of Ghastly Retreats
[6]  3    Glyph of Incorporeal Winds
[7]  4    Glyph of Seismic Strength
[8]  5.5  Glyph of Spontaneous Blades
[6]  3    Glyph of Sudden Strikes
[7]  4    Glyph of the Elusive Assassin
[6]  3    Glyph of the Northern Ram
[7]  4    Glyph of the Pouncing Manticore
[6]  3    Glyph of the Ravenous Wendigo
[7]  4    Glyph of the Rising Phoenix
[6]  3    Glyph of the Scorpion Tail
[7]  4    Glyph of the Stormclap
[7]  4    Glyph of the Winter Fox
[6]  3    Glyph of Wayward Souls
[4]  2.5  Rune of Amatok's Breath
[7]  4.8  Rune of Astral Rifts
[6]  3    Rune of Blazing Ends
[4]  2.6  Rune of Dark Desires
N/A  3.2  Rune of Displacement
[6]  3.5  Rune of Dreeg's Wounds
[6]  3.5  Rune of Eldritch Instability
[4]  2.5  Rune of Fallen Kings
N/A  2    Rune of Ishtak's Mercy
[6]  3    Rune of Murmur's Kiss
[7]  4.8  Rune of Nadaan's Strike
[6]  3.5  Rune of the Dark Progenitor
[6]  3.5  Rune of the Dreadnought
[6]  3    Rune of the Stormtitan
[6]  3    Rune of the Typhoon
[7]  4.8  Rune of Ultos' Arrival
[6]  3    Rune of Ulzaad's Madness
[6]  3.5  Rune of Ulzuin's Fall
[4]  2.6  Rune of Vampiric Shadows
[4]  2.5  Rune of Violent Delights
[6]  3    Rune of Wretched Desires

Tier key for defensive devotions:

Tier   15% 20% 25% 30% 33% 50%
[0]    15  20  25  30  33  50    (Base)
[1]    29  39  49  59  65  99    Arcane Will
[2]    34  45  56  68  74  100   Deadly Aim, Fighting Spirit
[3]    39? 53? 66? 79? 87? 100   Nothing?
[4]    45  60  75  90  99  100   Resilience
[4]    49  66  83  99  100 100   Prismatic Rage
[6]    58  78  98  100 100 100   Apothecarys Touch
[7]    69  92  100 100 100 100   Blast Shield
[8]    100 100 100 100 100 100   Serenity

When Hit and on Block have the same scaling. One of these seems rounded down… twice…
When Hit by Melee Attacks might be unique

Tier key for Chance on Critical Attack skills:

Tier   100%
[0]    100%*

Note: When a default attack crits to proc Upheaval, Upheaval itself needs to proc in order to trigger the devotion skill. Sometimes this makes devotion procs from Upheaval…
- rare on one enemy: 20% crit on Fire Strike then Upheaval 0.2 * 0.2 = 4% chance
- consistent on five enemies: 20% crit on Fire Strike (1 - 0.8 ^ 5 = 0.67) then Upheaval (0.67 * 0.2 * 5) = 67% chance, if that math works how it feels like it works.

General scaling notes and trends:

Anything that’s always available probably has base [0] scaling (Ex: DAR, WPS, Channels, Summons, Deployables, Big Nova AoE, Curses, 0s cd). This includes Siphon Souls, but not War Cry (which doesn’t even cost time cast…). Spam can definitely net 100% uptime.
Small cooldown reductions usually make no change to the proc rate.
A few mythical items have diminished scaling compared to their non-mythical counterparts, presumably due to their difference in cooldowns.
Certain lingering effects can inherit the skill’s inherent rate like Vire’s Might’s floor fire, but not judgement. VM’s fire doesn’t proc Meteor twice, but it procs Tsunami multiple times.
Certain combined effects like VM’s and its fire might be able to proc something twice if they both hit on the same frame?
Certain enemies including target dummies are unique and might not proc things like the other 99% of targets. It might be due to floor effects and certain enemies floating or changes in terrain elevation.
WPS and Upheaval need to proc on their own first, so binding them to on (critical) attack devotions can cause them to be rare procs.
A few combinations might simply not work well. Thermite Mine might only proc on the first hit. Summon Guardian of Empyrion might not deliver Phoenix Fire.
Somewhat related: Tsunami exclusively adds damage from any shield or dual wield weapons.
I’ve definitely missed a few entries for set completion bonuses and item skills.

Here are some other devotion guides:

General info: “Devotions: A how-to on maximizing them”
Visuals: “Chance on attack/ when hit/ on block devotions”

Afterward:

I recommend trying the most outrageous, silly, and effective builds you can dream up.

Gnomish_Inquisition · March 12, 2025, 2:26pm

“that’s not how it works”(some of it atleast)

the equation for working out devotion proc chances is ProcChance = BaseProcChance * (1 + (Cooldown * 81)/100 * (1 - (Duration * 11)/100)

that is why ex BWC does not have a fixed proc rate or “tier” but changes as you increase the duration(add more points into it); longer skill tick rate lower devo proc chance per tick
But lowering the cooldown/a triggering skill’s cooldown, except to 0, will increase frequency by maintaining base devo chance,
so if a 3sec base skill is lowered to 0.5sec cd it maintains the 3sec’s base proc chance, (ex 0.5 sec Boneharvest build vs 0sec boneharvest gets vastly diff base devo chance)

Spamming the same debuff on the same target does not increase proc chance, so no not 100%uptime from spam, but potential from multi targets or rng
War cry is not the same as siphon souls hence why it gets basic scaling/“not all cooldown aoes are the same”

likewise true DoTs ticking doesn’t/can’t trigger devotions, that’s why Judgment itself wont continue triggering(“ticks” are internal Trauma dot); but Heart of Wrath will because it’s a pseudo dot(ticking flat dmg)
Likewise whether you trigger the devotion more depends on the devo cd, yes Volcanic Stride can trigger meteor twice; if you lower Meteor’s cooldown enough to fit within the trigger
And no they/secondary effects don’t inherit the skill’s proc chance but their own/base chance, so VM/stride has difference proc chances, same for Judgment v Heart of wrath etc

yes Thermite Mines will trigger devos beyond the first hit
If you’re not able to trigger stuff on Dummies (assuming attack/crit proc) it means you might be using a pet and forgetting to use the pet command button more than once

Upheaval always trigger crits so there is no diminishing return there, WPS however exclude Upheaval however so 100% wps = 0 Upheaval regardless of crit chance

Guardians dont’ deliver phoenix fire because it’s a buff so it’s applied to the one triggering it; the pet(this goes for all pets)
Tsunami is not the only devo that adds offhand dmg, most devos with weapon dmg does except for scorpion sting type(nova projectile burst or something)

this is incorrect
Upheaval is not a regular wps so the interaction is not the same as when attaching a 20% devotion to a 20% wps

additionally, because upheaval is special, if there are 0 other wps every hit is considered an upheaval strike for the purpose of triggering non crit devos, or, assuming 0% crit chance and 0% wps, a 20% chance devo attached to upheaval will still have 20% chance to hit
if a crit devo is attached to upheaval then devo chance = crit chance (so using crit devos with 0 crit chance ofc then bad, but if you have 15% crit chance using a crit devo it has 15% chance now)

Bas · March 12, 2025, 9:39pm

It’s actually the same or similar for Cadence iirc. Putting a devotion proc on Cadence can also trigger on the non-Cadence hits. Not sure about the interaction with wps here tbh.
But it makes me feel better that Upheaval is not the only ‘special’ one

Gnomish_Inquisition · March 12, 2025, 9:57pm

yes, cadence can trigger devos on the first two hits,
but unlike upheaval it doesn’t get overwritten by WPS, it will however override wps itself on discharge (unless dual wield melee with 100% wps)