If you do password spraying at all, you'll know that usually it's easy to just spray "Summer2018" or something to that extent, but what if you want to start incorporating known passwords for users, thistool will allow you to input those and generate targeted wordlists that are easy to spray.
./xprey.rb -c "Company, Inc" --emails emails.txt -i breach_data.txt -o wordlist.txt
Easy as that!