Spirit Invulnerability

A depreciated 3e advantage, GURPS Spirits page 40
==4e equivalents==
*Angel
*Ancient One
==Adaptation==
in 4e this is partially reproduced with the Reversion enhancement for Insubstantiality in GURPS Horror. However this only carries the benefit of, at 0 HP, switching back and not dying.
==Differences==
===Benefits===
Benefit of SI over R:
:returns to spirit form with full normal HT and suffers no ill effects
===Drawbacks===
Downside of SI compared to R:
: prevents them from assuming material form again until their lost HT would have fully recovered
==Conversion==
To cover the full HT you would need Non-Reciprocol Damage which would require defining the substantial / insubstantial states as Alternate Forms
To cover the inability to turn substantial until fully healed, the best approximation would be Reciprocal Rest with some form of Limited Use matching the time it takes to heal from 0 to full HP.
Unless there is some inversion of Trigger, Injury such as Accessibility: Uninjured which could apply to the Shapeshifting
==Forum==
2008 http://forums.sjgames.com/showpost.php?p=513535&postcount=8 Jerander suggests an "only while substantial" limitation on unkillable 3
This isn't actually a known limitation though, otherwise a lot of people who never went insubstantial would take it all the time.
==see also==
*Vulnerability
Category:Depreciated Advantages