In the first few rounds I had cast 2 Lands of Dreams. Then a bit later, a Gruult Caverns. The caverns is the blue 8 health figure. All the blue hexes except a few in top right corner are actually mountains, even though about half of them show up as something else.

On a sidenote, I'm happy now that this deck worked even if only once. It was round 8 or so, and although I didn't draw a Barrier Peaks, I had a Char in hand too.

The problem seems to be related to some of the card graphics missing, like in the first picture. Another time everything seemed just fine:

More funny Land of Dreams screenshots, this time I dreamt of an ocean world: