Visit Some Inns
Once you begin to use your spell energy for fighting off Confoundables, you’re going to eventually have to recharge –this is what Inns are for. For those that are familiar with Pokemon GO, Inns essentially work the same way as PokeStops do.
Inns can be found at special locations around you like a public park, iconic statue, or near a famous mural. By going close to these Inns, you can then click on it to receive extra spell energy.
You can also place Dark Detectors at an Inn and rarer Traces will begin to pop up around the area for about 30 minutes.
Other people can take advantage of these detectors or even place their own to help you out so if you’re with a group of friends, try placing three detectors and you’ll definitely start seeing a whole bunch of Traces to catch.
Every five minutes, the Inn will reset itself allowing you to gather even more spell energy for all of your Confoundable catching needs. Finding the closest Inns by your home will be important if you plan on playing Harry Potter Wizards Unite for a long time.