I noticed a bug with The Witch-King, Deathless Lord. See the replay, when my opponent was at Site 6 he had Rumil on the table with two wounds on him. WK killed a companion and instead of giving me the option to exert a companion OR wound an ally twice, it automatically prompted me to exert a companion. I am assuming the code may be looking for an ally with at least 2 vitality, but I don't think that should be a requirement to make the choice.
http://www.gempukku.com/gemp-lotr/game.html?replayId=bigredmf$kph8lqb7knv7kbs7
This is not a bug.
If the effect of a card or special ability requires you to choose one of two different actions, you must choose an action that you are fully capable of performing (if possible).
Since you cannot wound an ally twice, you must exert a companion
Is it possible this quote is being misapplied? If there is an exhausted ally in play, how are you not capable of wounding him twice? Subsequently he dies after the first wound is taken, but where in the rules does it state you need to precognitively review everything before taking actions?
http://www.gempukku.com/gemp-lotr/game.html?replayId=dmaz$eg82qxkvbxx390x4An exhausted gandalf can be wounded twice.
According to this logic, an exhausted gandalf is not fully capable of being wounded twice?
One would argue that you are simply "fulfilling the maximum possible of the effect", but you cannot state that merely because that disclaimer you could apply it wholly to this situation with the Witch King. I can understand if the card is asking you to do something to a target that doesn't exist (i.e. if there are no allies in play). But I believe that if there is an ally in play, just like Gandalf it is capable of being wounded twice.
I can't find anywhere in the rules where it states that a minions game text functions differently than an event in this case.