If
Orc Soldier uses his skirmish ability, he exerts. If, however, he's skirmishing a companion bearing a
Horse of Rohan, Orc Soldier "must exert" at the start of the skirmish.
I'm wondering if there's a qualitative difference between these exertions. In the first case, the Soldier exerts himself; in the other, it seems, he
is exerted, in this case by the Horse, although my example might not be the best for highlighting my question - hopefully my point is still clear enough!
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If I had to answer my own question in the affirmative, I'd say that a character "exerts" to fulfill the requirements of its own game text, or via the incurred debt demanded by a card played by that character's owner. All other forms of exertion on that character would be an "is exerted" situation, marking a clear separation between the two different avenues of gaining an exertion token.
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Worded one final way: is there a defined design space between various forms of gaining an exertion token?