Dota 2 Wiki
Tower (Tier 2)
Tower Radiant model.png
Tower Radiant model.png
Tower Dire model.png
Tower Radiant icon.pngTower Dire icon.png
This unit has no mana.
Level 2
Armor Defense Class Structure
Magic Resistance 0%
Attack Damage Attack Class Siege
170 ‒ 174
Attack Range Ranged 700
Acquisition Range 700
Attack Speed 1.22 attack(s) per second. 110 • 0.9s BAT
Attack Animation 0.6+0.4
Projectile Speed 750
Turn Rate Takes 0.105s to turn 180°. 1
Collision Size 144
Vision Range (G) 19001100
Bounty Gold
110 Team
Experience 0
Abilities Backdoor Protection
Tower Protection
True Sight
Notes Denying grants 55 Gold team bounty to both teams.

Main Article: Buildings


Backdoor Protection
Backdoor Protection icon.png
Passive / Aura
Structure takes reduced damage, and quickly regenerates any damage taken while no enemy creeps are nearby.
Search Radius: 900
Heal per Second: 90
Damage Reduction: 50%
Protected Illusion Damage Reduction: 75%
Illusion Attack Damage Reduction: 60%
Reactivation Delay: 15
Aura Linger Duration: 0.5
Buff modifier_backdoor_protection: Undispellable. Persists death.
Buff modifier_backdoor_protection_in_base: Undispellable. Persists death.
Buff modifier_backdoor_protection_active: Undispellable. Persists death.


  • All buildings, except for tier 1 towers have this ability (although tier 1 towers have the 60% attack damage reduction against illusions).
  • Tier 2 towers have a search radius of 900 centered on them, each of them independent from each other.
  • The base buildings depend on the Ancient's search radius of 4000 centered on it. This means they all lose the protection together.
  • The unit detection is aura-based. If an enemy lane creep gets within the search radius of the tower/ancient the protection is lost.
    • The aura's effect lingers for 0.5 seconds, so the total reactivation delay is effectively 15.5 seconds.
  • Applies generic incoming damage reduction on the building. Stacks additively with other sources of generic incoming damage manipulation.
    • The reduction affects all damage the building takes that is not flagged as HP removal.
    • While protected, the building takes 50% less damage from any source, and 75% less damage from illusions.
  • The illusion attack damage reduction does not require backdoor protection to be active and works on all buildings, including tier 1 towers.
    • Applies unique incoming damage reduction to illusion attack damage. Stacks multiplicatively with sources of generic incoming damage reduction, like the active aspect of backdoor protection.
    • If a building is protected, the building takes 90% less attack damage from illusions. Their spell damage is only reduced by 75%.
  • If a backdoor-protected building is damaged by an enemy, it immediately starts healing back.
  • Heals 9 health in 0.1 second intervals, which translates to 90 health per second.
    • This means, it is possible to destroy protected buildings by dealing more than 90 damage per second (after reductions).
  • Only heals back damage dealt by enemy units. Damaged dealt by allies is not healed back.

Tower Protection
Pierces spell immunity.
Tower Protection icon.png
Increases armor and health regeneration of nearby allied heroes.
Radius: 900
Armor Bonus: 5
Health Regen Bonus: 3
Aura Linger Duration: 0.5
Buff modifier_tower_aura: Undispellable. Persists death.
Buff modifier_tower_aura_bonus: Undispellable. Persists death.


  • The aura's buff lingers for 0.5 seconds.
  • Tier 1 towers can regenerate up to 60 health in one minute.
    • Tier 2/3/4 towers can regenerate up to 180 health in one minute.
  • Multiple instances of Tower Protection do not stack.
    • When teleporting from a tier 2/3/4 tower to a tier 1 tower or vice versa, the armor and health regen bonuses update after the linger time.

True Sight
Pierces spell immunity.
Sentry Ward ability icon.png
Adds the ability to see invisible units and wards to any allied vision within the structure's range.
Radius: 700
Aura Linger Duration: 0.5
Buff modifier_tower_truesight_aura: Undispellable. Persists death.
Buff modifier_fountain_truesight_aura: Undispellable. Persists death.
Debuff modifier_truesight: Undispellable. Persists death.


  • The True Sight is provided within the whole area, regardless of the buildings actual vision. It is fully unobstructed.
  • The True Sight is provided by an aura which affects enemies. Its debuff lingers for 0.5 seconds.