New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
Build off of your tin, if you guys use tins. If not, try to pick any heroes with 8 attack or higher. I rarely pass up on them. Of course try to pick a brigade at the very beginning (something you got one or two good cards of that brigade) and build off of that. In addition, pick mainly offense. That's probably the most important thing. You always want to have a hero and an enhancement to help with.The rest is just about learning what card to pick in a pinch.