Favored how many times?? Looks like we have a little powerhouse uncommon on our hands here in Eutropia. Of note, the counter stays on the creature after, but the flying part is just until end of turn. Still, this is a way to slam through for huge damage, particularly if you build around Eutropia as you can get multiple triggers a turn even! This thing could get outright out of hand in the right list :)
Thanks WotC for this free preview card!