This happened just minutes ago, I don't think it's a bug but some sort of hack considering he had to click the cards to play, but I didn't know where to report it.
On the first round he played 4 death pilars and was left with 6 cards in his hand.
Then on the second round thinks got even more interesting and I started taking pictures...
Played another 3 death pilars, 3 boneyards one bonedragon and a sword, 4 cards left.
Third round: 4 death pilars, 1 boneyard, 11 skeletons, 4 cards left.
Fourth round I don't even know WTF...
So, what am I looking at here?