Heroes of Newerth Wiki
Spell Sunder
Spell Sunder.jpg
Location Icon Supportive.png Supportive
Type Filter Intelligence.png Intelligence
Filter Damage.png Damage
Filter Attack Speed.png Attack Speed
Filter Regeneration.png Regeneration
Stats +200 Max Health
+200 Max Mana
+200% Mana Regeneration
Cost 2675 (150)
Components Item Builds into
Glowstone (1200)
Perpetual Cogwheel (1325)
Spell Sunder.jpg


Dealing magic damage causes additional damage based on target's health.


When you deal Magic Damage to a player-controlled unit, applies a debuff that deals 4% of target's current Health in Magic Damage per second and reduces health regeneration by 75% for 3 seconds.

Debuff damage is reduced to 33% if you deal DoT damage instead.

Spell Sunder's debuffs do not stack with itself or activate from its own DoT.

  • Applies on Mixed Damage, but not on True Damage.
  • Damage from Spell Sunder is non-lethal.
  • If both the non-DoT and DoT debuffs are on a unit, the stronger Spell Sunder DoT will override the weaker DoT.
  • Damage is calculated every frame.


Version 4.7.8

  • Damage over Time (DoT) reduced from 5% to 4% of the target's Current Health when inflicting non-DoT Magic Damage.
    • DoT from Spell Sunder is still reduced to 33% power when inflicting DoT Magic Damage from a source other than Spell Sunder.

Version 4.5.4

  • Recipe cost reduced from 300 Gold.png to 150 Gold.png.
    • Total cost reduced from 2825 Gold.png to 2675 Gold.png.

Version 4.5.1

  • Health Regeneration reduction increased from 50% to 75%.

Version 4.3.0

Version 4.1.0

  • Damage per second reduced from [5 + 5% of current Health] to [5% of current Health].
  • Debuff now reduces Health Regeneration by 50%.

Version 4.0.0

  • Debuff damage per second increased from 5 + 3% of Current HP to 5 + 5% of Current HP.
  • Debuff duration reduced from 3.5 to 3 seconds.
  • Damage-over-Time (DoT) effect now works for 33% of the default values (down from 50%).

Version 3.8.0

  • Reworked recipe:
    • New:
      • Recipe: Glowstone.jpg Glowstone + Perpetual Cogwheel.jpg Perpetual Cogwheel + Recipe (300) (Total Cost: 2825 Gold.png)
      • Stats: +200 Max Health, +200 Max Mana, +200% Mana Regeneration
    • Old:
  • Debuff duration increased from 3s to 3.5s.
    • This is a 17% DoT damage increase.
  • [Undocumented Change] Moved item category from Combative to Supportive.

Version 3.3.0

  • Added.

Basic Items Icon Supplies.png Supplies Icon Accessories.png Accessories Icon Weapons.png Weapons Icon Relics.png Relics Icon Legendary.png Legendary
Recipe Items Icon Initiation.png Initiation Icon Supportive.png Supportive Icon Protective.png Protective Icon Combative.png Combative Icon Morph Attack.png Morph Attack
Spell Sunder.jpg
Spell Sunder
Other Items Boss Drops Removed Items Obsolete Items Debug Item