Invulnerability is an effect that reduces all damage taken to 0 (exept pure damage) and is the only form of damage reduction that affects true damage. Drain effects, such as life steal, will have no effect against invulnerability. An invulnerable champion wearing will still reflect damage, as Thornmail's damage reflect occurs before damage reduction.
Invulnerability may occasionally be used to refer to:
- , although this only prevents health from being taken below a certain amount and it does not actually reduce the damage inflicted.
- Untargetable effects, such as or . However, these effects only prevent you from being targeted or affected by area of effect
- Being untargetable does not prevent you from taking damage, such as from an active damage over time.