Tankbuster

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Tankbuster
Image for the Deadlock item Tankbuster
Cost Souls3,200
Tier 3
+50 Bonus Health
Passive 14s
Charges up over time with bonus spirit damage, causing abilities dealing more than 165 damage to deal additional damage. Ignores Spirit Resistance.
Upgrades From:
Mystic Burst
Internal name: upgrade_magic_shock

Tankbuster is a Tier 3 Spirit Item that can be purchased from the Shop for Souls3,200. Its component, Mystic Burst, makes up Souls800 of the cost.

Notes

  • Tankbuster is a Charge-Up item, so it's not affected by Cooldown Reduction.
  • Tankbuster only goes on cooldown when it affects enemy heroes. It will not go on cooldown when you hit an NPC.
  • Some forms of Spirit Amp applied by items count as separate damage instances and thus don't contribute to the single hit such as Escalating Exposure.
  • When the target is hit with spirit damage, the damage value which is compared against the triggering threshold is the base damage value prior to any increases or decreases from damage amp, damage reduction, spirit resistance, and spirit resistance reduction.
    • Damage amp and spirit resist reduction will not help you in achieving the damage threshold to trigger the passive.
    • Damage reduction and the target's spirit resistance will not prevent the passive from triggering when it otherwise would.
  • Interaction with spirit shields: The triggering of the additional damage is entirely unaffected by the target's barriers (or lack thereof).
  • The additional damage, and the ability which triggered the additional damage, are applied to the target as separate instances of damage. The additional damage from Tankbuster is dealt after the original spell damage.

Update history

View the full update history: Tankbuster/Update history

Update Changes

July 28, 2026

  • No longer procs off of items

March 6, 2026

  • Current Health Bonus Damage increased from 7.5% to 8%

December 16, 2025

  • Changed from doing % of Max Health to a % of Current Health.
  • Damage dealt increased from 5% to 7.5%.

Trivia

This item was previously named Improved Burst.


Weapon
Vitality
Spirit