Am I retarded? You're seriously saying that you use Nova+Rustler to pay for
Forest Spirits -- which are in turn the only offensive Life card in your deck?
You don't need any more Life quanta -- you have a Life Mark, and a bunch of 2-cost critters. You're good like that.
Really, what this deck needs is
MOAR WATAH!.
Seriously, try it like this:
Mark
12x Sapphire Tower
6x Forest Spirit
4x Freeze
3x Blue Crawler
3x Ice Bolt
2x Ice Shield
Use Freeze to buy yourself some time to get your offense set up, then save up enough for Ice Bolt to take out annoying enemy Otys, Shriekers, and Crimson Dragons. Drop your Crawlers and one Spirit early to do some early damage, and then save up and pwn with a pile of Spirits once your opponent has blown his wad (i.e. played out most of his hand) and you have a decent pile of Water quanta with which to buff Spirits with*.
*Note: This won't work against Fire, Air, or Death (RoF, Storms, Plagues), so for them you want to play Spirits one at a a time, pumping each until well out of easy kill range, then play the next and pump that as well.