This is something I suspected for quite some time, but today I got a solid proof, so I figured I’d share. In the past, I’d seen cases where cards that I stole from my opponent ended up with same exact results on my end even though their card effects were supposed to be random. But, it was just a speculation. Today though, something undisputable happened.
In my first arena game, my opponent played Kil’jaeden. On my turn, I played Matching Outfits on it, which generated Shapeless Constellation. I then played another Matching Outfits on my Shapeless Constellation, which spawned 2 x Ancient Void Hound. I won the game.
The very next arena game, my opponent also played Kil’jaeden. Then, I played Matching Outfits on it, which again created Shapeless Constellation. I then played another Matching Outfits on mine like before, and it spawned 2 x Ancient Void Hound again! Everything was exactly the same as my previous game. This is beyond what could be considered coincidence.