Illusions

Illusions are non-perfect copies of another unit. To enemies they look exactly the same as the original unit, but to allies the illusions are very distinct from the original one (illusions have a different color than the original unit). Illusions run equally fast, attack almost as fast but their attacks usually deal much less damage (the only exception is Chaos Knight) and they usually take a lot more damage (the only exception is Morphling). Illusions can be created by picking up the [Illusion Rune], certain spells or the item Manta Style.

Illusion abilities
Illusions can't use any active ability. Passive abilities that illusions can use:


 * Evasion
 * Critical Strike (it should be noted that the red number is before the illusion reduction)
 * Mana Burn (only works on melee illusions)
 * Movement Speed bonus
 * Attribute bonus (Strength, Agility and Intelligence)
 * Health or Mana
 * True Sight
 * Radiance burn aura (the aura still will not affect units already affected by a different Radiance aura)
 * Attack Speed bonus
 * Spell resistance from abilities, and base spell resistance
 * Quelling Blade's bonus damage to creeps

Passive abilities that illusions can't use (even if the animation might show something different):


 * Raw damage or armor
 * Health or Mana regeneration (this includes lifesteal)
 * Orb effects (except Mana Burn on melee illusions)
 * Cleave
 * Bash (it works in some rare scenarios, read more about it below), this includes the interrupt on Monkey King Bar
 * Damage block
 * Spell resistance from Cloak, Hood of Defiance or Khadgar's Pipe of Insight
 * Backstab (from Stealth Assassin)

Bash on Illusions
Illusions may proc the skill Bash, however they will never deal any bonus damage, also the stun they place is "fake" because despite the animation the target can still move, also if another bash hits the unit while in this "Fake bash" state it will only prolong the fake buff, this is also true the opposite way, if a real unit bashes a target and then the illusion "fake" bashes the real bash will be prolonged.

Illusions cannot bash using the effect of Skull Basher, they can still however proc Monkey King Bar's mini stun.

Auras on Illusions
Illusions will bestow any auras that the original hero has, however they usually will not benefit from this aura.

Exceptions: Illusions can benefit from auras that increase Attack Speed or Movement Speed.