Illusions



Illusions are imperfect copies of another unit. To enemies they look exactly the same as the original unit (with the exception of Wall of Replica and Reflection), but to allies the illusions are very distinct from the original one (illusions have a different color than the original unit, usually blue). Illusions run equally fast and attack almost as fast but their attacks usually deal much less damage and they usually take much more damage. With a few exceptions, illusions are controllable by whichever player they are created by. There are two types of illusion abilities: Mirror Image type and Single Target type. Illusions deal 25% less damage against buildings.

Mirror Image
Mirror Image type illusions are created at the caster's location and are mixed up with the hero so that enemies will not know which is which. These abilities also provide a short period of invulnerability and dispel most buffs and some disables. The following abilities are Mirror Image type:

Other sources of illusions
Illusions usually are part of other abilities: here is a list of abilities that will spawn illusions but won't grant any kind of invulnerability or dispels:



Passive abilities Illusions can use

 * Attack range changes
 * Attack Speed bonuses from, and ,
 * Attack Speed buff from ,
 * Attribute Bonus (Strength, Agility and Intelligence)
 * Critical Strike (it should be noted that the red number is before the illusion reduction)
 * Evasion
 * 's Feedback (only works on melee illusions)
 * Health or Mana
 * Magic Resistance from abilities, and from base Magic Resistance
 * 's True Strike
 * Movement Speed bonus (except passive)
 * 's bonus damage to creeps
 * 's True Sight
 * 's
 * 's
 * 's (movement speed bonus only)
 * 's
 * 's
 * 's (This is unintended but works as of 6.81)
 * 's
 * 's
 * 's
 * 's (movement speed bonus only)
 * 's
 * 's
 * 's
 * 's
 * 's (movement speed slow only)
 * 's
 * 's
 * 's

Passive abilities Illusions cannot use

 * Raw Damage, Armor or Attack Speed increase (Yasha, Leap, and auras are exceptions since they are based on the Endurance Aura in DotA)
 * Raw Health or Mana regeneration (including Fountain heal)
 * Lifesteal (regardless of what the animation may show)
 * Bash
 * Most Unique attack modifiers
 * Cleave
 * Damage Block (,, etc)
 * Magic Resistance from items (,, or )
 * Greater and Lesser Maim from items like, , and
 * 's spell block
 * 's
 * 's
 * 's
 * 's

Auras on Illusions
In most cases, illusions will bestow the auras that the original hero has. However, with the exception of auras that increase Attack Speed or Movement Speed, they usually will not benefit from them. Positive auras: Negative auras:
 * 's (attack speed bonus)
 * 's
 * 's (movement speed bonus)
 * 's Endurance (movement speed bonus)
 * 's Assault Aura (attack speed bonus)
 * 's
 * 's Burn Damage
 * 's Assault Aura (Armor Reduction bonus)
 * 's Freezing Aura
 * 's
 * 's

Buffs illusions can use
Illusions can benefit from the buffs that modify heroes' intrinsic values, such as Base damage, Base Attack Time, attack range, base armor, attributes, health/mana, etc. If illusions are created when any of the buffs is placed on an Hero, illusions benefit from it for the buff duration (duration is refreshed for the illusions upon creation).


 * 's Unholy Strength
 * 's
 * 's
 * 's
 * 's
 * 's
 * 's
 * 's (only when Split Shot is active before the illusions spawn)
 * 's (only when Berserker's Rage is active before the illusions spawn)

Abilities which interact differently with Illusions
There are a couple of different ways abilities can interact with illusions, notably they can instantly destroy illusions, deal bonus damage to them or ignore them.

Abilities which destroy illusions:
 * 's Hex
 * 's
 * 's (after 0.1 seconds)
 * 's
 * 's
 * 's (destroyed on the first damage tick)
 * 's (destroyed if look for 2 seconds)

Abilities which deal bonus damage to illusions:
 * 's Purge (99999 damage)
 * 's (25% of their current hp)
 * 's (100/200/300/400)

Abilities which ignore illusions:
 * 's
 * 's
 * 's

Other illusion interactions:
 * 's (treats the illusion like a creep and puts in under Enchantress' control)