Spell Immunity/Enemy Interactions

Spell immunity on enemies
Spells interact very differently when facing spell immune enemies. Most of them cannot affect spell immune units, some of them can only affect them partially, and some fully pierce spell immunity.

Fully piercing
These abilities fully affect spell immune units. This also goes for listed spells which only deal magical damage. In those cases, the spells attempt to damage the enemy, resulting in 0 damage instances, which may be enough to trigger some on-damage effects.

Besides the listed abilities, all Critical Strikes, Cleaves and Bashes (except 's Mini-Bash) pierce spell immunity.

Note: These lists do not consider spell immunity dispelling any buffs or debuffs. They only display how spells' effects react when combined with spell immunity.

These abilities also fully pierce spell immunity. However, unlike the ones above, these do not attempt to damage enemies, so no 0 damage instances are created.

1 Only the initial impact damage is fully blocked. Besides that, it fully pierces spell immunity.

2 The applied to enemies during Fiend's Grip (when upgraded) also pierces spell immunity.

3 Attempts to damage initially hit spell immune enemies. Spell immune enemies send echo waves towards nearby spell immune enemies. Echoes do not attempt to damage spell immune enemies.

Partially piercing
These abilities do not fully affect spell immune enemies, but are also not fully blocked. Usually, the main part of these abilities pierce spell immunity, while their secondary effects are blocked.

Not piercing
These abilities cannot apply their effects on spell immune units. Single Target abilities listed in here cannot target them all, while area effects ignore them. Debuffs which are placed before the target gets spell immune still continue to fully affect the target. In case of damaging debuffs, the damage is reduced to 0 if it is magical and may still trigger on-damage effects.

Note: As said before, these lists do not consider spell immunity dispelling any buffs or debuffs, since not all sources of spell immunity dispel. They only display how spells' effects react when combined with spell immunity.

1 These spells use projectiles. If their target turns spell immune while in flight, they have no effect on the target upon impact with the target. If they have an area effect, it is still applied to nearby enemies.

2 These abilities place a debuff on the target which deals damage. Since already placed debuffs still apply their effects on spell immune units, they also still deal damage. In case of magical damage, it gets reduced to 0.

3 These abilities have a delayed effect. Their delayed effect is not applied if their targets are spell immune at the time. This includes their damage.

4 These abilities have delayed effects as well. However, their effects are still fully applied, even when their target is spell immune at that time. This includes their damage.

5 These abilities continue to work when their target turns spell immune, applying the area effect. However, they do not affect spell immune enemies. This includes the primary target.

6 Unlike all other debuffs, these debuffs immediately stop applying their effects to the target if it turns spell immune. They continue with their effects once the spell immunity is gone, given the debuffs did not expire by then.

7 These abilities periodically check for spell immunity on their targets and end immediately if it gets detected.