Help:Style guide/announcer pack page layout



Spell immunity (formerly known as magic immunity) is a modifier which prevents most spells to target the affected unit. This includes single-targeted spells, area spells, passive and active abilities.

Spell immunity may be the main part of a spell, but it also is used as an extra layer of protection by some abilities (usually combined with invulnerability).

Mechanics
Spell immunity is a status effect (also known as modifier). Most spells in the game first check wether or not the unit has the spell modifier on. If the modifier is present, single target spells cannot target the unit at all, while area of effect spells ignore the unit and already ongoing effects may fizzle. However, some spells (and most ultimates) pierce spell immunity and can fully target and affect spell immune units.

Usually, a spell either fully pierces spell immunity, or it is fully blocked. However, there are a few exceptions to this rule. Wether or not a spell pierces spell immunity is noted down in the description boxes of each ability, right below the ability name.

When a unit turns spell immune while a projectile from an ability is already flying towards it, the projectile has no effect upon impact if the spell it originates from does not pierce spell immunity. The same applies to any delayed effect.

Most sources of spell immunity also dispel the target upon getting applied, removing all buffs or debuffs a basic dispel can remove. The dispel applied by spell immunities is slightly stronger than a basic dispel and can remove a couple of more status effects. However, not all of them apply a dispel. A list of dispellable effects can be found here.

Spell immunity does not prevent regular attacks of any units. However, some attack modifiers do get blocked, but not all of them. Generally, all critical strikes, cleaves and most bashes pierce spell immunity.

Damage interaction
All sources of spell immunity also set the affected unit's magic resistance to 100%. This leads to the affected unit taking no magical damage at all, not even from spells which pierce spell immunity. Their damage technically still hits the unit, but gets reduced to 0. This means they may still proc on-damage effects, since some of them do react on 0 damage instances as well.

Since magic resistance only affects magical damage, the unit is still fully affected by physical and pure damage. If a piercing ability uses one of those damage types, it does damage the unit.

If an ability does not pierce spell immunity, it also does not attempt to damage spell immune units, regardless of the damage type. In order for a spell to damage spell immune units, it must be set to pierce spell immunity.

Sources of spell immunity
These abilities grant spell immunity as a main part of the spell. They all apply a dispel upon getting applied.


 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"

These abilities also apply spell immunity. However, they only grant spell immunity as an extra layer of protection ontop of the invulnerability they grant. They do not dispel units at all and only matter for spell which can affect invulnerable units.


 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"
 * -valign="top"

With a very few exceptions, most non-hero units gain their permanent spell immunity through a passive ability.

Other units with spell immunity either gain it through a status buff, or don't have any indicator at all.

Spell immunity piercing abilities
Since there is some inconsistancy, this list is divided into spells which fully pierce spell immunity and spells which partially pierce spell immunity.

Fully piercing
Note: As noted before, only pure and physical damage can hurt spell immune units. A magical damage dealing spell which pierces spell immunity has its damage reduced to 0 due to the 100% magic resistance.

Partially piercing

 * -valign="top"

Not piercing
Note: This only