Magic immunity

Magic immunity is a buff that prevents a unit from taking any magical damage. It also prevents them from being targeted by most abilites, although most ultimate abilities will penetrate magic immunity.

Effects of magic immunity
A unit under the magic immunity buff will take no damage that is considered magical damage or pure damage. This includes any magical damage caused by an enemy Hero's ultimate ability. Note that this is not the same as having 100% magic resistance: certain damage types that are reduced by magic resistance will still affect the hero, mixed damage in particular. Exceptions: Doom, Midnight Pulse, and March of the Machines will damage units which are magic immune despite dealing magical damage, as they deal a special type of magical damage called universal damage.

A magic immune unit cannot be targeted by most abilities. They can still be affected by area-of-effect non-targeted abilities that heal, deal physical damage, or deal mixed damage, such as Dazzle's Shadow Wave or Beastmaster's Wild Axes, respectively. However, they cannot be directly targeted, even if the ability does physical damage. Dazzle's Poison Touch, for example, cannot affect magic immune units.

Basic attacks are unaffected by magic immunity, as are most attack modifiers such as critical strike. Bash from a ranged unit is considered a magical effect and will not work, but the bonus damage from the bash will. Bash from a melee hero, on the other hand, will stun but not deal damage. The chain lightning effect from Mjollnir or Maelstrom will work, but will not damage any Heroes that are magic immune. Similarly, the mana burning effect from Diffusal Blade or Anti-Mage will also not work, nor will Incapacitating Bite from Broodmother.

Magic immunity can be used to dodge projectile-based abilities such as Magic Missile.

Ultimates that partially go through magic immunity
The following abilities can target magic immune units, and can still stun or slow a unit under magic immunity.


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Abilities that partially go through magic immunity

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Ultimates that do not go through magic immunity

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Gaining magic immunity
Heroes can gain temporary magic immunity from several sources. In addition, certain higher level neutral creeps are permanently magic immune. Roshan is not magic immune, but will block some abilities, similar to Linken's Sphere.

Abilities & Effects that grant Magic Immunity
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Creeps with magic immunity