Especially if your card came with a lot of other cards, its possible to tear the cardor a cheap card that came along with it, like a common card or a basic energy cardand look to see if the card is authentic
Example Blech Decklist here: Blechs Creepy Crawlies Nita, Forum Conciliator Nita is one of those commanders that sounds incredibly fun for the person playing it and absolutely miserable for everyone else at the table
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Other players can choose the Battle as a target for any number of their attacking creatures, whilst the protector player may choose to defend it by blocking
Currently, the listing has "N/A" next to the market price section, which likely means that there haven't been many sales of this card
Its a Commander staple for a reason, and I expect Teferi's Protection to stay that way