Creating Genre Packs gives a bunch of advice on treating magic and other extraordinary abilities.
It is, however, silent on how to treat extraordinary powers that semipermanently change someone's ability to frame the contests. (Change the results of the credibility test for the target of the ability.)
For example: someone has a spell Transform Into Pretty Much Any Animal 18. So, they transform into a finch: they're small and they can fly. Considerably later -- still a finch -- they want to evade a group of archers by the virtue of being small and being able to fly. This is clearly credible. Question is, what ability to use?
Some options I can see:
- Transforming into an animal grants the corresponding keyword with all abilities at 6. Individual animal forms can be improved with hero points as if they were a regular part of the character.
- Transforming into an animal grants the corresponding keyword at a level determined by the victory level of the original contest.
- Transforming into an animal grants the corresponding keyword with all abilities at the level of the transforming ability.
- Transforming into an animal grants the corresponding keyword, with abilities mapped to character's normal abilities. Eg.you lose Brave 3w, but gain Flight 3w.
Any other ideas? What approaches have people running non-Gloranthan HQ used to deal with this?
There's a character in my Teenage Fairies Exiled From Arcadia in Al-Amarja game with an ability like this. So far I've been playing it very much by the ear, and while there have been no problems of note so far -- partly due to the game's freewheeling nature -- I'm trying to figure out how to deal with powers like this in games where consistency of powers is more important.
EDIT: formatting and typos.