I'll admit that earthquake is overpowered but there are ways around it. Just up the cost to 2 or 3 and it'll be fine probably. I play a pillarless nova/immo deck similiar to Samura's(we both were experiementing at the time and he gave me the idea for it) and I love it when opponents ahve useless earthquakes. There are only a small percentage of pillarless players like me and Samura because people have trouble balancing such a deck out(I get mastery wins about 50% of the time with mine actually).

Also I think druidic staff nees to be upgraded somewhat because it has almost no value in decks anywhere. I think it would be cool to have druidic staff have a similiar function to fahrenheit except for healing instead.