Idol of C'Thun damage is scaling as if it was an NPC

[seanpeters86]

Game Version:
10.0.2 live Build 46924

Description:
When getting an Idol of C'thun proc, both tendrils do less damage than expected.

Specifically they both seem to have a 0.60 modifier to the damage. In addition to that Void Tendril actually has an initial amount of BASE damage, and then it tacks on the 40% reduced modifier. The static base damage added to void tendril could be level scaled? but not sure. Either way the damage is extremely off from what is expected.

• Void Tendril
  • spell power modifier in spell data = 0.25
  • damage = 1275 + (intellect * 0.60 * 0.25)
• Void Lasher
  • spell power modifier in spell data = 0.13
  • damage = intellect * 0.60 * 0.13

Logs, Images, Videos

In the above tests you can see it is doing significantly less than it should be, and does not seem to be consistently scaling with spell power. The spell ID associated with the damage event in-game is 394979.

Name             : Mind Sear (id=394979) [Spell Family (6)] 
Class            : Priest
School           : Shadow
Spell Type       : Magic
Range            : 100 yards
Triggered by     : Mind Sear (394976)
                 : No Redirection (35), No Reflection (39), Initiates Combat (Enables Auto-Attack) (41), Active Threat (94), PvP Enabling (96), Not a Proc (105), Treat As Periodic (121), Do Not Display Range (126), No Cast Log (128), Not In Spellbook (143), Allow Cast While Channeling (308), Use Spell Base Level For Scaling (332), Allow Class Ability Procs (416)
Effects          :
#1 (id=1035090)  : Dummy (3)
                   Base Value: -30 | Scaled Value: -30 | PvP Coefficient: 1.00000 | Mechanic: Snare | Target: Unknown(77)
#2 (id=1035091)  : School Damage (2): shadow
                   Base Value: 0 | Scaled Value: 0 | SP Coefficient: 0.13000 | PvP Coefficient: 1.00000 | Radius: 0 - 10 yards | Target: Unknown(76) -> AOE enemy (instant) (16)
Description      : $@spelldesc336214

In the second effect you can see SP Coefficient: 0.13000 which is not what in-game values are using. This might also be related as to why it does not scale with Mastery.

Another data point is just looking at the damage vs. the Void Tendril (Mind Flay) Tendril. Without any gear on at level 70 here are the results:

• Void Tendril Mind Flay tick: 1589
• Void Lasher Mind Sear tick: 163

That means you need 10 targets for the Mind Sear Void Lasher tick to hit for more than the SINGLE TARGET Void Tendril tick.

Reproducible:
yes

Howto:

1. Press Mind Sear or Mind Flay

[seanpeters86]

More testing here after the recent changes on the beta realms: https://docs.google.com/spreadsheets/d/e/2PACX-1vTltLQVWhAyvKsrw_58qte0dws-FYTd-UxoSbC-shOi8i3VASmqbCXndEt1HeUjIyyTAUgiURv87l57/pubhtml

Take Aways:

• Mind Flay tendril values have been updated (see below)
• Mind Sear lasher looks to be roughly the same, it just slaps a 60% reduction on the SP coeff and the data matches live servers.

Void Tendril ticks are now:

• (intellect * 0.25 * 0.5454545455) + 1667.5 at level 70

0.5454545455 = 0.60 / 1.1 from the recent 10% buff

Where does this mystery base damage number come from? Well specifically it comes from this table: https://wow.tools/dbc/?dbc=expectedstat&build=10.0.2.46456&hotfixes=true#page=1&colFilter[11]=70 and the CreatureSpellDamage field. It seems as if the Void Tendril is being scaled as if it was an NPC.

Looking at actual spell data the Void Tendril Mind Flay spell (193473) has a Base value of 1. All of our other pet spells only set this to 0, which is likely accounting for this issue.

[seanpeters86]

Note as of build 10.0.2 live Build 46658 the damage is still bugged on live but it does not get the extra 10% from the recent buff