I'm still only rank 22, but I was rank 25 this morning (cause of the new season. I was 24.) I've been on a win streak using warrior and paladin, and my wins have all come by way of crushing blow. Nothing below 16 damage on the final turn, and my paladin got a 22 damage final turn.
I'm sure I'll be back to getting my butt kicked in no time, but its good to be dominant for a couple of games.
No money purchased cards so far, though I'm following the Raistlin method of using gold to buy a pack every couple of days. So far I think I've opened four of them, nothing earth shattering inside, mostly stuff for classes I haven't really started playing yet.