[US] Received boxes of pokemon cards from Walmart that I didn't order. What's the angle here?

A user received an unexpected USPS package from Walmart containing unopened boxes of Pokemon First Partner Illustration Collection - Series 1. The package, labeled as paid for by a third party, was addressed to the user with a misspelled name and address. The user has no Walmart account, no suspicious credit card charges, and is unsure if it is a brushing scam or a scalper error.