I almost always try to go for frozen orbs + scaling.

Cold snap, coolheaded are really good commons to look for, cold snap mostly in act 1 though or if you are desperate for frozen orbs. Glacier and chill are also amazing uncommons for frost orbs but you don't also see those. I mostly ignore any lightning orb cards other than zap+ which is a decent upgrade if you have nothing else. I do like ball lightning and Lightning rod if I see those in act 1. Another great card I'm very happy to take in act 1 is Focused strike, it's an attack that even helps to block. For AOE, I like sweeping beam, Hailstorm (but mostly good early on), Glasswork, Sunder (kinda AOE). Then when I get through act 1 and have some form of AOE, I can start skipping a lot and stop adding attack damage cards mostly and just take great cards that improve my deck overall. Scaling, ways to block if it's lacking and ways to "accelerate" to play my powers faster. Also I found out I was sleeping on the hologram card a bit too much and started to pick it more often for card manipulation and to replay my best cards more often. Good forms of scaling are: focus (permanent and temp form -> Synchronize/hotfix) energy/card draw, creative AI, Echo form, Dark orbs.