Dota 2 Wiki

Mage Slayer is an item purchasable at the Base Shop, under Artifacts.

Components required from the Base Shop
Mage Slayer
Mage Slayer icon
Forged by a secret order in The Third Age of Praxa'cia to fell the False King.
Cost 2825 Gold (400)
Sell Value Full price refunded within 10s. 1412.5 Gold
Passive ? Mage Slayer
Bonus ? +10 Intelligence
+2 Mana Regeneration
+20% Magic Resistance
+45 Attack Speed
Shareable No
Disassemble No
Usage Alert ? No
Mage Slayer (2825)
Cloak (800)
Oblivion Staff (1625)
Recipe (400)

Additional Information[]

  • Stacks multiplicatively with other Magic Resistance magic resistance sources.
    • Increases most heroes' magic resistance to 40%.
    • With the magic resistance bonus from this source, every 10 points of Intelligence attribute symbol intelligence further increases the total magic resistance by 0.8%. [?]


Mage Slayer
Cannot be used by illusions. Pierces debuff immunity.
Places a debuff when you attack enemies, dealing 25 damage per second and causing them to do 40% less spell damage for 3 seconds.
Damage: 25
Spell Damage Reduction: 40%
Duration: 3
Modifiers [?]

  • The debuff from successive attacks on the same target does not stack but refreshes the duration.
  • The attacks first apply the debuff, then their own damage.
  • Applies generic outgoing damage reduction on the affected target. Stacks additively with other sources of generic outgoing damage manipulation.

Recommended Heroes[]

Generally heroes with abilities that affects multiple targets at once benefit from wielding this item:

[[No results|110px|link=Ember SpiritUnknown Hero icon]]
Ember Spirit
Monkey King icon
Monkey King
Pangolier icon
[[No results|110px|link=RikiUnknown Hero icon]]


  • 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 Glimmer Cape or the regeneration of a Hood of Defiance icon 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 Timbersaw, Outworld Destroyer minimap icon Outworld Destroyer, Silencer minimap icon Silencer, and Bloodseeker minimap icon Bloodseeker for Pure damage spells, and Bristleback minimap icon Bristleback and Dazzle minimap icon Dazzle for Physical damage spells.

Recent Changes[]

  • Increased Default recipe icon Recipe cost from 200 Gold to 400 Gold (total cost increases from 2625 Gold to 2825 Gold).
  • Reduced Magic Resistance bonus from 25% to 20%.
  • Mage Slayer icon Mage Slayer
    • Increased debuff damage per second from 20 to 25.
    • Reduced debuff duration from 6s to 3s.
  • Mage Slayer icon Mage Slayer Spell Damage Debuff increased from 35% to 40%
  • Increased Oblivion Staff icon Oblivion Staff cost from 1500 Gold to 1625 Gold (total cost increases from 2500 Gold to 2625 Gold).
  • No longer builds into Bloodthorn icon Bloodthorn.
  • Increased attack speed bonus from 20 to 45.
  • No longer grants attack damage.
  • Mage Slayer icon Mage Slayer debuff now also deals 20 damage per second.