Ancient

This article is about the two Ancients on either side of the map, and the main objective of the game. For other uses, see Ancient (disambiguation).

Main Article: Buildings

Abilities[]

Backdoor Protection

Ability
Passive / Aura

Affects
Self

Structure takes reduced damage, and quickly regenerates any damage taken while no enemy creeps are nearby.

Search Radius: 4000

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

Modifiers

modifier_backdoor_protection: Undispellable. Persists death.

modifier_backdoor_protection_in_base: Undispellable. Persists death.

modifier_backdoor_protection_active: Undispellable. Persists death.

Notes:

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.

True Sight

Ability
Aura

Affects
Enemies

Adds the ability to see invisible units and wards to any allied vision within the structure's range.

Radius: 900

Aura Linger Duration: 0.5

Modifiers

modifier_tower_truesight_aura: Undispellable. Persists death.

modifier_fountain_truesight_aura: Undispellable. Persists death.

modifier_truesight: Undispellable. Persists death.

Notes:

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.

Cannot detect units under the effect of Shadow Dance, Smoke of Deceit, and Techies' traps and mines within the aura of Aghanim's Scepter upgraded Minefield Sign.