Slim it down -- 30 cards means a better chance to draw the important stuff.
Stuff that's not important:
All three Blue Crawlers -- Unless you're going to Adrenaline them, they suck. Just don't bother.
Both Purifies -- too situational.
Both Thorn Carapaces -- You want your shields to stop damage, and Ice Shields are way better at that. Killing creatures slowly isn't really appropriate for an assertive creature-based offense.
The second Druid Staff
One Heal -- four is overkill.
One Forest Spirit -- Same deal.
Try it with all of those cards taken out for a dozen games, and then come back and report.