Today’s patch has affected the rarity of over 40 different Premium cards. We have updated the rarity of all cards affected, and attempted to properly reflect stat changes in the backend data of the card database. We also took the opportunity to catch up on the first great rarity update; there are much fewer basic commons in the game than what this database said yesterday.
What this means for all users is that the text on hover on all cards should be correct, but the images may not be. The new event cards, updated images, both new heroes and the corrections for my inevitable mistakes are forthcoming in the near future. Thank you all for your patience while we catch up.