I've two heros to level 10, and now I got a daily quest that is specific to two classes that I still have at level 1. Winning with those with a basic deck lacking any of the cards you gain on the way to level 10 looks very unlikely. I've played reasonably successful with my mage, so my opponents now are a bit too strong for a level 1 basic deck.
Levelling with practice games against the regular AI is tediously slow and boring. But playing casual or ranked games seems mostly suicide without it, though it might be an option if the XP gain even when defeated would be higher than in practice. Or should I play against the expert AI?
Which is the fastest way to level up my heros to 10 so that I can properly use them with all the basic cards?