Shadowverse

and this is what helped me win the first battle. ambush is awesome.

At that time, I had two cards in my hand that would have killed my hero if played.
Otherwise, Havencraft is really strong, and the Mage is interesting, but it seems to depend heavily on the draw, which I had a good one in the last game.

Added after 56 seconds
I can play tomorrow late in the evening, or on Friday around lunchtime.