What we've established is that there is a ruling that addresses cards that require a choice of one of two different actions printed on the card (separated by the conjunction
or). There are a number of cards, such as:
Hard ChoiceHave PatiencePippin WoBaSSlaked ThirstsFury of the White RiderTerrible and EvilThat this ruling does not apply to. However, there is somewhat of a problem with the non-singular nature of the action performed by these cards. I think technically they all involve two actions.
Elgar asserts that performing as much as possible requires choosing a character that lets you do as much as possible (based on parts of the rulebook other that the sentence refered to above). I assert that you can choose a character and
then do as much as possible. Otherwise, we're left with a bunch of cards (and likely more to follow) that would be played in a completely counter-intuitive manner. I don't believe Decipher intended that, for example,
Terrible and Evil would be incapable of killing an exhausted Nazgul under certain random circumstances (Exhausted Nazgul alone? No problem? Random other minion on the table? Tough!).
As to whether you can use
WoBaS to target, say, an unwoundable Easterling with a
Easterling Polearm... I don't really care that much. Why would you? Would you exert
Greenleaf to do the same? There's no rules question in my mind because it's simply the sort of thing that is of no advantage to the Free Peoples player and so it is irrelevant. I suspect that there is no direct violation of the rules if you pay the cost but cannot perform the effect fully (like
Greenleaf above). There have been many cases in Gemp that I've misclicked and paid the cost (a wound or exert) for an effect that I cannot perform. So while I don't really care about this particular side point (since it has little practical application), I'm not willing to concede it if it's going to lead to playing a host of other cards incorrectly.
EDIT: Even so, there's a difference between an effect that
cannot be performed and one that can be
partially performed.