Mage Slayer

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Mage Slayer
Mage Slayer icon.png
Forged by a secret order in The Third Age of Praxa'cia to fell the False King.
3250 (400)
Bought From
Passive [?] Mage Slayer
Bonus [?] +20 Agility
+20% Magic Resistance
+20 Attack Damage
Disassemble? No
Alert allies? No
Mage Slayer (3250)Components4.png
Cloak (500)
Blade of Alacrity (1000)
Claymore (1350)
Recipe (400)

Additional Information[edit]


Mage Slayer
Cannot be used by illusions. Does not pierce spell immunity.
Places a debuff when you attack enemies, causing them to do 35% less spell damage for 4 seconds.
Spell Damage Reduction: 35%
Duration: 4
Debuff modifier_item_mage_slayer_debuff: Dispellable with any dispel.


  • Successive attacks with Mage Slayer do not stack the debuff, but refresh the duration instead.
  • The attacks first apply the debuff, then their own damage.
  • Stacks multiplicatively with other sources of spell damage reduction and amplification.

Recommended Heroes[edit]

Ember Spirit icon.png
  • Hitting multiple targets with Sleight of Fist can reduce the enemy team's magic damage output significantly for the duration of the debuff.
Monkey King icon.png
  • Hitting multiple targets with Boundless Strike and Wukong's Command can reduce the enemy team's magic damage output significantly for the duration of the debuff.
Pangolier icon.png
  • Hitting multiple targets with Swashbuckle can reduce the enemy team's magic damage output significantly for the duration of the debuff.
Phantom Lancer icon.png
  • Benefits from the magic damage reduction significantly particularly because Black King Bar icon.png Black King Bar active identifies his hero and may not be an option.
Riki icon.png



  • Generally used against spell based heroes or lineups when playing as a hero reliant on auto-attacks or one that uses skills that use attack modifiers.
  • The hidden power of Mage Slayer may be the fact it is the only magic damage reduction upgrade that gives raw damage per second increase to auto-attacks. Build into it from a Cloak if you feel you do not need the utility or support of a Glimmer Cape icon.png Glimmer Cape or the regeneration of a Hood of Defiance icon.png Hood of Defiance.
  • Remember that the debuff reduces all damage types, not just Magical damage. This makes it a great way to reduce the damage output of heroes that mostly use Pure damage or, more situationally, Physical damage via spells. Some common examples are Timbersaw minimap icon.png Timbersaw, Outworld Destroyer minimap icon.png Outworld Destroyer, Silencer minimap icon.png Silencer, and Bloodseeker minimap icon.png Bloodseeker for Pure damage spells, and Bristleback minimap icon.png Bristleback and Dazzle minimap icon.png Dazzle for Physical damage spells.

Recent Changes[edit]

  • Reduced Default recipe icon.png Recipe cost from 600 Gold to 400 Gold (total cost decreases from 3450 Gold to 3250 Gold).
  • Created.