Try my priest deck: "Get BIG"

Here is the deck list:
Get BIG

You can also simply copy the following string, then alt+tab back into hearthstone where it should make the deck for you automatically:
AAECAa0GAqIJws4CDuUE0wrXCuIM8gy9uwLwuwLqvwKrwgLKywLOzALmzAKZzgL94QIA

I've tried this deck several times now and had a lot of fun with it. So far it has a ~64% win rate in standard.