User blog comment:Otakon7/Otakon7's Buddyfight Simulator/@comment-12248576-20170616182108/@comment-2234004-20170617091831

For information.

Could have been cache, or just that my server couldn't fetch the image from the wikia at the time.

Decks from older card list updates also keep the old image so unless you re-add the card(s), it might be broken since wikia sems to change how it presents the images.