Dota 2

Harmonizer

Tier 5 neutral item.

Harmonizer
Tier 5

When did you last play?

Full history

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Since you last played

New in 7.41

Harmonizer was added in 7.41, after you last played. Here is what it does now.

0 buffs and 1 nerf in total: trending weaker.

Biggest changes

  • ▼
    Balance mana cost reduction per ability off cooldown increased from 5% to 7%

Most recent change patch 7.41d, Jun 2026

  • ▼
    Balance mana cost reduction per ability off cooldown increased from 5% to 7%
What it does now
  • Balance PassiveGain 7% spell mana cost reduction for every ability off cooldown and 6% spell amplification for every ability on cooldown.

Neutral item pools rotate. This item may not be in the current pool.

Every Harmonizer change, patch by patch

All 6 changes Valve listed for Harmonizer since patch 7.41, newest first. Last changed in 7.41d (Jun 2026).

Patch 7.41d

  • ▼
    Balance mana cost reduction per ability off cooldown increased from 5% to 7%

Patch 7.41 Added

  • ◆
    Passive: Balance. Grants 5% mana cost reduction for every hero ability off cooldown and 6% spell amplification for every spell on cooldown
  • ◆
    Dormant Curio increases mana cost reduction from 5% to 6.5% and spell amplification from 6% to 7.8%
  • ◆
    Item spells are affected by both effects, however item cooldowns don't affect the Harmonizer buff
  • ◆
    The buff counts only current abilities that have cooldown, even if it's passive
  • ◆
    Invoked abilities and sub-abilities don't count when they're hidden