If you are not on the latest version of Premiere Pro, there are still legal ways to use these tools:
To the user, the promise seems simple: download a file, enter a fake key, and enjoy the full suite of Film Impact transitions for $0. Film Impact License Key Fixed Free
In Premiere Pro, apply any Film Impact transition to a clip. Effect Controls tab and click the button labeled "Get 30-Days Free Access" If you are not on the latest version