Biggest disappointment in the set. I thought the point of exert was that they were finally keywording "doesn't untap during next untap step", so this could just be "Tap and exert up to two target creatures". Instead they're defining a keyword to mean exactly that, but then refusing to use it for some reason. And unless they change their mind about exert or define another keyword with the exact same meaning, we're stuck with the awful wording forever.