Geomancer Passive: Explained

Published On: July 29, 2021

Geomancer Passive: Explained


Many of us who didn’t have Geomancer most likely took advantage of the guaranteed event that started on the 27th July where you could get him for 40 Ancient Shards. Our team decided to take a deep dive into his passive mechanic and figure out exactly how it worked. If you want to see the full workings, check out the video below but lets breakdown what we discovered.

Breaking Down the Passive

Geomancer’s passive is described as:

Decreases the damage all allies receive by 15% and deflects that damage onto each enemy under a HP Burn debuff placed by this champion. Whenever this Champion is attacked, deflects 30% of the damage instead.

Our team figured out pretty quickly that the damage reduction actually works WITHOUT the HP Burn being present making that component already an extremely powerful mechanic. You need to make sure also that if you want the damage reflection that it is Geomancer who places the HP burn (or overwrites it).

Reflect Damage Formula

The team ran a number of tests through Doom Tower Hard floor 1 and 2 where we were able to determine all the stats we need (check out the Stages Tool which gives you this information) to find the calculation behind Geomancer’s passive. They quickly realised that a regular and reproducible number was reflecting back which made it clear that it must be drawing from the raw damage. Additionally, if the attack was AoE, Geomancer reflects two times. The first is each attack for each ally at a rate of 15% of the raw damage and the second is 1 time at a rate of 30% for Geomancers damage.

As the damage is placed on an enemy – it is reduced by that target’s Defence Reduction % therefore effects such as decrease defence and Ignore Defence increased the output of damage from the passive. Additionally any weaken effects on the enemy also multiplied the reflected damage according to its strength.

This drew the conclusion that the initial formula was:

Raw Damage * 15% or 30% * (1-Damage Reduction %) * Weaken

Ally Protection + Guardian Impact

The conclusion that damage was affected by multiplied effects led the team to consider the impact of Ally Protection and Guardian Artifact Set. This did have a significant impact on the damage:

  1. If a champion attack had Ally Protection – the reflect amount was HALVED however the damage was still calculated from Raw Damage
  2. If a team had a single guardian set on a champion – the reflect amount was reduced by 10%
  3. Each subsequent set of guardian reduced the damage by a further 10%

Defensive Masteries Impact

As a result of these tests, the team considered if Ally Protection reduced damage then are other damage reduction effects in place such as Blastproof or Bulwark masteries. Testing with a bulwark champion did lead to 5% less reflect damage being produced. Meanwhile tests in clan boss proved conclusively that Blastproof also reduced the reflected amount produced by Geomancer.

Whilst these masteries are ofcourse essential in most areas of the game, it is still somewhat frustrating that you lose damage as a result.

Gathering Fury Impact (Clan Boss)

Most people will likely plan for Geomancer to be used in Clan Boss. The team’s initial tests proved challenging with many numbers flying around but what become clear was that the later the fight, the more damage Geomancer reflected. This led to testing if the enemies multiplication effects also increased the Reflect amount.

The clan boss ramps up in damage on turn 10 onwards and more significantly after turn 20. The formula for this (where DMG_MUL is the damage done by Clan Boss Attack):

Turns 10 – 19: DMG_MUL * 0.75 * (CB Turn-9)
Turns 20+: DMG_MUL * 7.5 + DMG_MUL * (CB Turn-19)

Through testing with screenshots, the team discovered that Geomancer’s reflect damage actually is multiplied by the same formula above, even though it is not generated by the enemy. This means the longer you can survive against the Clan Boss, the more effective your Geomancer becomes. All whilst giving you a flat 15% damage reduction.


Hopefully this article has given you a greater understanding of how to get the most from your geomancer passive. It’s an incredibly powerful ability. Let us know in the comments below if anything found here has changed your approach and please check our new team Youtube channel where we cover Raid and many other games.



  1. Spook290 July 29, 2021 at 9:30 am

    How does his passive interact with budget unkillables?
    Finding the stun targeting thrown off since bringing him in instead of Aothar, I’m assuming this is because of the 30% damage reduction?

    • Saphyrra July 29, 2021 at 2:59 pm

      I dont think that should decide the stun unless Geo is higher HP value as a result of taking less damage if he is your stun target

  2. Linjah August 4, 2021 at 12:48 am

    What if Geomancer was wearing the guardian set? Would that still decrease the net reflection damage?

    • Saphyrra August 4, 2021 at 3:37 pm

      From the allies yes but from Geo himself no.

  3. SunkenCrawdad August 11, 2021 at 3:38 pm

    Are there any stats I can increase on Geomancer himself to increase the reflected damage? Specifically, can the reflected damage crit? Would increasing Geo’s attack Stat boost the reflected damage?

    I’m running him in an unkillable team (double ME) and getting maybe 13,14M damage from him in UNM, but one of my clan mates has gotten over 30M (not running unkillable, so maybe he goes well last the 50 turn mark).

    • Saphyrra August 11, 2021 at 6:42 pm

      Not really – it is subject to multipliers though so fury will work as does weaken. Receiving more damage will increase that damage but thats a double edged sword. For example: blastproof mastery will reduce the damage you take by 5% and as a result the damage geo reflects.

      • richuhr May 12, 2022 at 3:32 am

        Hi Saphyrra.. just wondering if Fury set definitely multiplies the damage from geo, or whether it was a more theroetical statement above?

  4. Mickyway August 13, 2021 at 3:37 pm

    Do you know if the dmg reduction does stack with other passive abilities like Duchess?

  5. Halafu August 23, 2021 at 12:01 am

    Is there a set that increases the damage reflected (either the raw damage or GS procs)? Savage, Fury etc?

    • EpsilonGreaterthan October 27, 2021 at 5:48 am

      I am also in here trying to find that answer. hopefully someone will see that and answer.

  6. Mad Muffster September 6, 2021 at 11:57 pm

    Oooops…I’ve got Krisk in Guardian with Bulwark. Damn lol. Good job I looked at this, thank you for the brain work.

    • pjstar35 January 26, 2022 at 4:31 am

      It seems this article/testing was done before the changes to his passive. Do you think that any results in this article would be different with the reworked passive? Specifically with the fact that the reflected damage now ignores defense automatically?

      • Phixion January 26, 2022 at 7:45 am

        Yeah this was back in July 21, we will re-visit it

  7. Sev October 27, 2021 at 9:02 am

    if you have a leech debuff on the clan boss does the reflected damage give health back ?
    Also i doubt it does as it would be extremely OP if it did, but i assume the reflect hits on his passive cannot trigger war master/giant slayer ?

    • Saphyrra October 27, 2021 at 11:45 am

      No I think leech only applies to on hit damage from skills rather than buffs/debuffs (like poisons also do not)

  8. EQArtimus January 8, 2022 at 6:43 pm

    I understand that the HP debuff has to be his. If he places the original and it is spread by Haarken, do the additional HP burns still “belong” to him?

  9. beatmebashme February 2, 2022 at 9:08 am

    Hey, does Geomancer’s position in the team affect his passive? EG: If he was last on the team, would his passive still reduce & reflect damage for the whole team?

    • SS2020user March 15, 2022 at 9:10 am

      The position doesn’t change anything.

  10. Brad217 April 4, 2022 at 6:13 pm

    If the hp burn is extended does it still belong to geo?

  11. The pvon April 6, 2022 at 3:08 am

    @Brad217 yes if the burn placed by Geo is extended it will continue to give the reflect dmg until the skill comes off or is overwritten

  12. [email protected] October 30, 2022 at 4:49 am

    I’m using Geo in Iron Twins and keep getting “0”s proc’ing for reflected damage. Does the buff “block damage” not reflect? It seems like it does sometimes so is it an acc/res thing? Don’t mean to be an idiot or maybe I just missed something somewhere.

    Love the site…

Leave A Comment