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DOTA 2 / HERO HISTORY

Alchemist changes

Balance notes across the versions listed by Valve. An unchanged patch is a small victory for your muscle memory.

Change record

47 patches with recorded changes · 118 of 118 listed patches readable.

Coverage: Feb 1, 2018 to Sep 15, 2026. This feed does not include every patch in Dota’s lifetime.

Inspect coverage by patch

May 6, 2026

Alchemist in 7.41c

  • Greevil's GreedBonus base/max Extra Gold per melted Scepter decreased from +6 to +3
  • Acid SprayCooldown rescaled from 22/21/20/19s to 21s
  • Chemical RageBonus Health Regen decreased from 60/90/120 to 50/85/120

Apr 7, 2026

Alchemist in 7.41b

  • Base Agility decreased from 22 to 19
  • TalentsLevel 10 Talent +1 Acid Spray Armor Reduction replaced with +1% Corrosive Weaponry Slow / Damage Reduction Per Stack
  • TalentsLevel 15 Talent +1% Corrosive Weaponry Slow / Damage Reduction Per Stack replaced with +1 Acid Spray Armor Reduction

Mar 27, 2026

Alchemist in 7.41a

  • Base movement speed decreased from 295 to 290
  • Greevil's GreedMax Bonus Gold Per Kill decreased from 18 to 16
  • Greevil's GreedBonus Damage per Scepter decreased from +25 to +15

Mar 24, 2026

Alchemist in 7.41

  • TalentsLevel 10 Talent Unstable Concoction Radius increased from +125 to +150
  • TalentsLevel 15 Talent Damage per Greevil's Greed stack increased from +2.5 to +3
  • TalentsLevel 15 Talent Acid Spray grants armor to allies replaced with +1% Corrosive Weaponry Slow/Damage Reduction Per Stack
  • Greevil's GreedAghanim's Scepter now also increases Base Bonus Gold and Max Bonus Gold per kill by 6 per melted Aghanim's Scepter
  • Corrosive WeaponryMovement Slow per stack increased from 2/2.5/3/3.5% to 2.5/3/3.5/4%
  • Corrosive WeaponryBase Attack Damage Reduction per stack increased from 2/2.5/3/3.5% to 2.5/3/3.5/4%

Dec 15, 2025

Alchemist in 7.40

  • TalentsLevel 15 Talent Damage per Greevil's Greed stack increased from +2 to +2.5
  • Acid SprayMana Cost increased from 105/110/115/120 to 120

May 22, 2025

Alchemist in 7.39

  • Dividends · Greevil's GreedGPM per Aghanim's Scepter decreased from +75 to +70
  • Corrosive WeaponryMax Stacks decreased from 10/12/14/16 to 7/10/13/16
  • Corrosive WeaponryMovement Slow per stack increased from 1.5/2/2.5/3% to 2/2.5/3/3.5%
  • Corrosive WeaponryBase Attack Damage Reduction per stack increased from 1.5/2/2.5/3% to 2/2.5/3/3.5%

Mar 27, 2025

Alchemist in 7.38c

  • Corrosive WeaponryUnstable Concoction stack count per second of brew time now rounds up to the nearest second (minimum 1 stack)

Mar 4, 2025

Alchemist in 7.38b

  • Greevil's GreedGifting Aghanim's Scepters no longer provides Spell Amplification

Feb 18, 2025

Alchemist in 7.38

  • Dividends · Greevil's GreedAlchemist gains +75 GPM for each Aghanim's Scepter he has granted to allies
  • Dividends · Greevil's Greed · ContextAlchemist consuming his own Aghanim's Scepter will grant Dividends
  • Aghanim's Scepter granting moved from Chemical Rage to Greevil's Greed
  • Greevil's GreedAghanim's Scepter granting range increased from 600 to Global
  • Greevil's GreedAghanim's Scepter granting is now announced to all allies and spectators
  • Acid SprayRadius decreased from 400/475/550/625 to 350/400/450/500
  • Acid SprayNow applies 1 Corrosive Weaponry stack with each tick of damage
  • Unstable ConcoctionNow applies 1 Corrosive Weaponry stack per second of brew time
  • Corrosive WeaponryStacks are also applied when enemies take damage from Alchemist's spells. Acid Spray applies 1 stack per second. Unstable Concoction applies 1 stack per second of brew time
  • Corrosive WeaponryStacks per attack increased from 1 to 2
  • Corrosive WeaponryMax Stacks increased from 4/6/8/10 to 10/12/14/16
  • Corrosive WeaponryMovement Slow per stack decreased from 4/5/6/7% to 1.5/2/2.5/3%
  • Corrosive WeaponryBase Attack Damage Reduction per stack decreased from 3/4/5/6% to 1.5/2/2.5/3%
  • Chemical RageBonus Move Speed decreased from 30/45/60 to 20/30/40

Nov 19, 2024

Alchemist in 7.37e

  • Mixologist · Unstable ConcoctionCooldown reduction increased from 30% to 35%
  • Acid SprayMana Cost rescaled from 110 to 105/110/115/120
  • Unstable ConcoctionCooldown increased from 15s to 17s

Aug 14, 2024

Alchemist in 7.37b

  • Greevil's GreedRecent Kill Window increased from 36s to 40s
  • Berserk PotionDuration increased from 10s to 15s

May 22, 2024

Alchemist in 7.36

  • Innate Ability · Greevil's GreedRemains as an Innate ability. Passive, can't be leveled up
  • Seed MoneyAlchemist starts with 250 bonus gold
  • Mixologist · Chemical RageDecreases Berserk Potion cooldown by 50% and Unstable Concoction by 30% for the duration of Chemical Rage
  • Base Attack Speed increased from 100 to 110
  • Corrosive WeaponryNo longer reduces Status Resistance by 3/4/5/6% per stack
  • Corrosive WeaponryNow reduces Base Attack Damage by 3/4/5/6% per stack
  • Corrosive WeaponryStats are no longer multiplied during Chemical Rage
  • Chemical RageBonus Health Regen increased from 50/80/110 to 60/90/120

Dec 21, 2023

Alchemist in 7.35b

  • Corrosive WeaponryMovement Slow per stack increased from 3/4/5/6% to 4/5/6/7%

Dec 14, 2023

Alchemist in 7.35

  • Acid SprayMana Cost decreased from 120 to 110
  • Corrosive WeaponryDebuff Duration increased from 3.5s to 4s

Aug 14, 2023

Alchemist in 7.34b

  • Base Armor increased by 1
  • Chemical RageBonus Move Speed increased from 20/40/60 to 30/45/60

Aug 8, 2023

Alchemist in 7.34

  • Corrosive WeaponryMax Stacks decreased from 5/7/9/11 to 4/6/8/10
  • Corrosive WeaponryMovement Slow and Status Resistance Reduction per stack is now increased by 1.5% whenever Alchemist is in Chemical Rage

May 13, 2023

Alchemist in 7.33c

  • Base Movement Speed decreased from 300 to 295
  • TalentsLevel 15 Talent Damage per Greevil's Greed stack decreased from +3 to +2
  • Unstable ConcoctionCooldown increased from 13s to 15s
  • Greevil's GreedBase Bonus Gold decreased from +3 to +2
  • Greevil's GreedExtra Bonus Gold decreased from +3 to +2
  • Chemical RageBonus Movement Speed decreased from 40/50/60 to 20/40/60

Apr 25, 2023

Alchemist in 7.33b

  • Base Movement Speed reduced from 305 to 300
  • Acid SprayRadius decreased from 475/525/575/625 to 400/475/550/625
  • Acid SprayArmor reduction reduced from 4/5/6/7 to 3/4/5/6

Apr 20, 2023

Alchemist in 7.33

  • TalentsLevel 15 Talent Damage per Greevil's Greed stack increased from +1.5 to +3
  • Acid SprayCast Point improved from 0.2s to 0.1s
  • Acid SprayCooldown decreased from 22s to 22/21/20/19s
  • Acid SprayMana Cost decreased from 130 to 120
  • Acid SprayDuration decreased from 16s to 15s
  • Acid SprayDamage per second increased from 20/25/30/35 to 25/30/35/40
  • Unstable ConcoctionMax Stun Duration decreased from 2.2/2.8/3.4/4s to 1.7/2.2/2.7/3.2s
  • Unstable Concoction · ContextDuration decreased as a part of the comprehensive Disables Reduction
  • Greevil's GreedNow an innate ability
  • Greevil's GreedMax Bonus Gold per kill rescaled from 15/18/21/24 to 18
  • Greevil's GreedBounty Rune Multiplier rescaled from 1.8/2.2/2.6/3 to 2
  • Corrosive WeaponryNew basic passive ability
  • Corrosive WeaponryAttacks apply a stacking debuff on enemies that reduces movement speed by 3/4/5/6% and status resistance by 3/4/5/6% per stack. Applying a new stack refreshes the duration. Has no effect on buildings or Roshan. Max Stacks: 5/7/9/11. Debuff Duration: 3.5s
  • Chemical RageBonus Health Regen increased from 50/75/100 to 50/80/110

Mar 6, 2023

Alchemist in 7.32e

  • Unstable ConcoctionMax Stun Duration increased from 1.75/2.5/3.25/4s to 2.2/2.8/3.4/4s
  • Chemical RageBonus Damage per Scepter increased from 20 to 25

Nov 29, 2022

Alchemist in 7.32d

  • TalentsLevel 15 Talent Damage per Greevil’s Greed stack increased from +1 to +1.5
  • Acid SprayMana Cost decreased from 130/140/150/160 to 130
  • Greevil's GreedBounty Rune multiplier increased from 1.5/2/2.5/3 to 1.8/2.2/2.6/3

Aug 30, 2022

Alchemist in 7.32b

  • Strength reduced from 25 + 2.9 to 23 + 2.7
  • Unstable ConcoctionBonus Movement Speed reduced from 5/10/15/20% to 4/8/12/16%

Aug 23, 2022

Alchemist in 7.32

  • Giving an Aghanim's Scepter to an ally now grants Alchemist bonus Damage and Spell Amplification even if Alchemist doesn't have one yet
  • TalentsLevel 10 Talent +15 Attack Speed replaced with +1 Acid Spray Armor Reduction
  • TalentsLevel 15 Talent +350 Health replaced with Acid Spray Also Grants Armor to Allies
  • TalentsLevel 15 Talent +20 Damage replaced with +1 Damage per Greevil's Greed Stack (Max 24 damage)
  • TalentsLevel 20 Talent +25% Cleave replaced with -0.1s Chemical Rage Base Attack Time

Jun 8, 2022

Alchemist in 7.31d

  • Berserk PotionShard Mana Cost reduced from 125 to 100
  • Chemical RageDuration increased from 25s to 30s
  • Chemical RageCooldown increased from 55s to 60s

Feb 23, 2022

Alchemist in 7.31

  • Unstable ConcoctionGrants Alchemist 5/10/15/20% movement speed while charging
  • Unstable ConcoctionExplosion now damages enemy creeps within its radius

Sep 10, 2021

Alchemist in 7.30c

  • Base Damage rescaled from 49-58 to 52-58
  • Chemical RageMana Cost from 50/100/150 to 50/75/100

Aug 17, 2021

Alchemist in 7.30

  • TalentsLevel 10 Talent -6s Unstable Concoction Cooldown replaced with +125 Unstable Concoction Radius
  • Unstable ConcoctionCooldown reduced from 16s to 13s
  • Unstable ConcoctionMana Cost rescaled from 90/100/110/120 to 100
  • Berserk PotionNow additionally grants 30 bonus movement speed

Apr 9, 2021

Alchemist in 7.29

  • Greevil's GreedGold bonus cap reduced from 18/21/24/27 to 15/18/21/24

Jul 15, 2020

Alchemist in 7.27b

  • TalentsLevel 20 Talent increased from +350 Unstable Concoction to +400
  • TalentsLevel 25 Talent increased from +40 Chemical Rage Regen to +50
  • Unstable ConcoctionRadius increased from 200 to 250

May 2, 2020

Alchemist in 7.26c

  • TalentsLevel 10 Talent reduced from +20 Attack Speed to +15
  • TalentsLevel 10 Talent increased from -5.5s Unstable Concoction Cooldown to -6s
  • TalentsLevel 15 Talent reduced from +25 Damage to +20
  • TalentsLevel 15 Talent increased from +325 Health to +350
  • TalentsLevel 20 Talent increased from +325 Unstable Concoction Damage to +350

Apr 21, 2020

Alchemist in 7.26a

  • Greevil's GreedCap reduced from 20/24/28/32 to 18/22/26/30
  • Greevil's GreedBase gold bonus reduced from 4 to 3
  • Greevil's GreedBounty Rune multiplier reduced from 2/2.5/3/3.5 to 1.5/2/2.5/3

Sep 6, 2019

Alchemist in 7.22g

  • TalentsLevel 15 Talent reduced from +50 Damage to +30
  • TalentsLevel 25 Talent reduced from -0.2 Chemical Rage Base Attack Time to -0.15
  • Greevil's GreedGold bonus per stack reduced from 4 to 3
  • Chemical RageNo longer provides mana regeneration

May 24, 2019

Alchemist in 7.22

  • Added Scepter upgrade. With Scepter equipped or synthesized, you gain a bonus +30 Damage and +6% Spell Amp for each Scepter that you gave allies at any point in the game.

Mar 2, 2019

Alchemist in 7.21c

  • Acid SprayRadius increased from 400/475/550/625 to 475/525/575/625

Jan 29, 2019

Alchemist in 7.21

  • Base movement speed increased by 10
  • Base agility increased from 16 to 22
  • TalentsLevel 10 Talent reduced from -8s Unstable Concoction to -7s
  • TalentsLevel 20 Talent Concoction talent now adds the damage to the max instead of the base
  • Chemical RageBase attack time improved from 1.3/1.15/1.0 to 1.2/1.1/1.0

Sep 1, 2018

Alchemist in 7.19b

  • Greevil's GreedBounty rune multiplier rescaled from 3.5x to 2/2.5/3/3.5x

Jun 25, 2018

Alchemist in 7.18

  • Greevil's GreedGold Bonus Cap increased from 16/20/24/28 to 20/24/28/32
  • Greevil's GreedStack Duration increased from 30 to 40

May 27, 2018

Alchemist in 7.16

  • Greevil's GreedBounty rune multiplier increased from 3 to 3.5

Apr 24, 2018

Alchemist in 7.14

  • Greevil's GreedBounty Runes bonus gold increased from 2.5 to 3x
  • Chemical RageHealth regen increased from 40/48/56 to 40/55/70

Mar 1, 2018

Alchemist in 7.10

  • Talent: Level 20 Talent increased from +25% Cleave to +30%

Feb 1, 2018

Alchemist in 7.08

  • Talent: Level 10 Talent increased from -5s Unstable Concoction Cooldown to -8s
  • Talent: Level 15 Talent increased from +350 Health to +400
  • Talent: Level 20 Talent increased from +360 Unstable Concoction to +400
  • Chemical RageChemical Rage base attack time improved from 1.4/1.2/1.0 to 1.3/1.15/1.0

Source: Valve’s public Dota 2 data feeds. Notes belong to Valve. Dates use Bellevue time (Pacific).