If any blizzard dev is here, please have a look at the response of the following end point. the cards result is wrong…
And btw, the same ‘wrong’ results are showing in your site playhearthstone .com/ en-us/ cards?set=arena&viewMode=table (sorry can’t post links)
^ Check out the documentation. The only two valid gameModes right now are constructed and battlegrounds.
The problem is not the end point as an end-point, it works.
The problem is the arenaIds array that has wrong ids in it
and the whole API is missing the latest Darkmoon Races Mini-Set.
That makes any requests returning either wrong (arena) either incomplete (constructed) results.