by brerlapine
The best article I have ever seen on the idea of alternative power generation!!!!http://shadowfist.webjaw.com/strategy/alternatepower.htm
Sadly, the cards recommended do not tell you what faction they are from (if any) and I highly recommend printing this list and writing them in yourself. i.e. dra = dragons, asc =ascended etc.
However, this site is a bit old. For example, ice healing isn't present. So I recommend looking at the new sets as well.