MTG Salvation

Quote from Bthepanda

There aren't many board wipes in green and certainly no one sided effects unless you want to use Hurricane. All is Dust, Oblivion Stone, and Nevinyrral's Disk are the best ones that I can think of.

I will second these suggestions, and as someone who uses the above spot removal with polukranos as the focus of my deck I want to say those are excellent spot removal suggestions