I found a [Vanilla Mastercard]( worth $100 today in a parking lot outside a busy mall.

The card itself hasn't been opened and it has the full $100 credit on it.

As far as I can tell, these are the options I have:

1. Report the card - call Mastercard and let them know. The benefit is that I do something "good" and report this. However, the card was not opened from the package so there is no way anyone could report it lost/stolen and thus they won't get their money back anyways.

2. Use it to buy something.  The benefit here is that I get a free $100 to spend. The downside, Mastercard could, if they found out somehow, reverse the charges of the card and I don't want any trouble to come to me, legally.

3. ??? SUGGEST THINGS HERE
user
I found a $100 Vanilla Mastercard and I'm wondering what to do with it.
assistant
I found a [Vanilla Mastercard]( worth $100 today in a parking lot outside a busy mall.

The card itself hasn't been opened and it has the full $100 credit on it.

As far as I can tell, these are the options I have:

1. Report the card - call Mastercard and let them know. The benefit is that I do something "good" and report this. However, the card was not opened from the package so there is no way anyone could report it lost/stolen and thus they won't get their money back anyways.

2. Use it to buy something.  The benefit here is that I get a free $100 to spend. The downside, Mastercard could, if they found out somehow, reverse the charges of the card and I don't want any trouble to come to me, legally.

3. ??? SUGGEST THINGS HERE
user
I found a Vanilla Mastercard that has a $100 credit on it that I
assistant