I probably shouldn’t have signed up for a Reckoners game when I haven’t read the Reckoners series.
I think Mat’s village, especially if there aren’t any village epics. It depends on what the Motivator does, of course — if it’s a powerup for Epics then it would be more uselful to an elim, or to a villager who has lots of village Epics to give it to. Again, I haven’t read the Reckoners; I don’t know what the Motivator did in the books.
tl;dr: If the Motivator is an Epic booster, Mat’s more likely to be elim/neutral, especially if there aren’t village epics. If the Motivator is independent of that, it’s more likely Mat’s village. Because usefulness.