He managed to make a fly zoom straight into his hand, though he wasn’t entirely sure that was his prowess at Summoning Charms — perhaps the fly was just stupid.
There will be three tasks, spaced throughout the school year, and they will test the champions in many different ways… their magical prowess — their daring — their powers of deduction — and, of course, their ability to cope with danger.
There are no more uses of "prowess" in the book.
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Their defensive prowess helped them win the Super Bowl.
They soon began to boast of their respective superiority to each other in strength and prowess.