roaring moon holo pokemon card Darkness Calamity Storm (100+) You may discard a Stadium in play Roaring Moon [Cosmos Holo] #109

They are also the most common method of searching out specific Pokemon from your deck

But what is perhaps more useful information is the relevance of Petty Revenge it hits 58 of the top 100 commanders in the past 2 years, according to EDHREC

However Wizards chooses to hand it out, this promo is, unfortunately, pretty unexciting

It's a general marketplace, so your listing is in front of a massive audience, which can be helpful for moving obscure or niche stuff that a more specialized platform might not have demand for

We once met a father-son duo that drove eight hours from Virginia to meet us to sell a Michael Jordan rookie card stored in Tupperware since 1986 - great read here