An optional Enhancement defined in Power-Ups 4: Enhancements p13, for those abilities (usually psychic/telepathic type effects) which confer some kind of immunity or resistance when successfully resisted. Each +50% moves it down a level; +20% moves it "sideways" on the same level.
The examples clarify that this applies to both failure/success and critical failure/success, if a trait has different effects on a critical.
| Level | Effect |
|---|---|
| 4 | Permanently Immune |
| 3 | Immune for one day or Permanent, cumulative -2 penalty |
| 2 | Immune for one hour or Cumulative -2 penalty lasting one day |
| 1 | Cumulative -2 penalty lasting one hour |
| 0 | No effect |