Dont forget your strongest cc, earth grab. I'm playing earth savant atm(still couple hours left before water) and I don't find myself casting FtS at all as earth grab replaces it(also reflex save>fort save). No SR check on it either.
You will probably want mass hold monster for +50% damage so I recommend to put enervate to your spellbook. 260pts stoneskin is also no joke. Burning blood is good too. I couldn't fit firewall, icestorm or ddoor in for level 4.
A tip for earth savant: Acid fog + waves. Makes them crawl.![]()