Toss the card away, and you can order another one, or another three, or get them all in foil, right through the app
There are also more fun ways to evaluate Magic cards, like flavor text or art
In most cases, I dont think a local auction house will get you top dollar for those primo cards so you have to consider a larger auction house that knows how to handle your specific collection
(You may cast this card from your graveyard for its escape cost.) To resolve Kroxa's second triggered ability in a multiplayer game, the next opponent in turn order (or, if it's an opponent's turn, the opponent whose turn it is) chooses a card in hand and sets it aside without revealing it
For reference, while the art for these cards is unique, these are reprints of Standard-legal cards that have already been revealed to appear in the main set