I got stuck in arena 3 for awhile, getting through arena 4 was smooth, and now I'm feeling the heat in arena 5. I've managed to get as high as 1645, but keeping up the momentum is tough. Back down to 1537.
The slow flow of new cards is starting to get a bit discouraging. It feels like the cards I neglect the most are also the cards I'm finding the most of, and advancing my deck requires either finding a ton of a single card, finding a very rare card, and assuming I manage either, putting down a significant chunk of gold. I envy all the people running around arena 4 with multiple lvl 7 commons, lvl 4+ rares, and lvl 2+ epics.
I also really envy the player I came across with a lvl 4 Wizard. Really wanting to give that card a try, but I want to at least get it to lvl 2 first. (Edit: Looking through past battles, I'm now realizing lvl 4+ Wizards are incredibly common to see around here. Somehow only noticed one.)