You only unlockthe first section for conquest when you get a new faction. You will need to buy keys to unlock the reminder. If you are lucky, you cam get the flash sale bundle for all 3 factions, and 10 packs for $20
Thanks for the info. I'd probably do the flash sale bundle since I'd get extra cards and 15 battles. Otherwise I'll probably pass unless I get heavy into the multiplayer.
Getting into Multiplayer is a good way to get the gold to unlock the conquest matches too FYI. You can earn enough for a key in 2 days if you wanted to.