This question was originally in the "priestly healing" thread, but was kind of buried in there.
So:
Can Action card powers be used outside Encounter mode?
The answer to this affects a lot of things (including priest healing, of course).
If "yes", then we need to figure out how to stop a lot of weird cases (instant healing, instant fatigue/stress recharge, etc).
If "no", then it means that magic and invocations don't work outside combat (or other Encounter modes). Which is weird. It also makes the card Call of the Wild a somewhat useless card, since the main use case would be to have it active before you end up in Encounter mode (via ambush etc).
If "sometimes", we need clear guidelines on what and when. "GM discretion" doesn't cut it, when it affects such critical stuff as healing (is it instant or weeks in bed? That cannot just be "GM decides", especially since all other types of healing have exact mechanics).
!
), I'll see if I can condense it here. Thanks especially to mws and smathis for the "other viewpoint" here, and in bearing with all the confusion.