Going back to the arena talk earlier, the complaints about "never" getting the op Mage cards and the importance of curve.
This was my most recent Warlock run:
Nothing insanely powerful by itself, just above average minion quality with the occasional stinker. No AoE panic button except for one Shadowflame, which is conditional and I only used it in two games anyway. Comparatively low curve due to the Warlock hero power.
On the other hand, my latest Mage draft:
Whoa, Frostbolt, 2 Flamecannons, 2 Fireballs, Polymorph, Water Ele and 2 Mad Scientists! How lucky!
No, actually due to the outrageously worthless curve I was forced to draft and no draw whatsoever it's the most inconsistent piece of shit I've played in a long time. I just retired it at 2-2 - last time I've done that was over a year ago. I probably could have gotten another 2 or so wins but every single game was such an unbearable slog that the additional non-golden common simply wasn't worth my time (especially as Mage whose vanilla-ness just bores me to death at this point).
So what I'm saying is, don't get too salty over all the op shit your opponents have and how you never get those Fireballs, Flamestrikes or whatever. Good curve, smart play and the ability to accept the occasional bullshit loss and move on is what gets you far in arena.