Strangleroot Geist and Predator Ooze is a must for mono green. and you can give them trample with rancor. I would run 4 of each and remove prized elephant, spiked baloth, pathbreaker wurm, gravetiller wurm, timberpack wolf and wolfbitten captive. if you want to run white in the deck then I would opt for Silverblade Paladin to combo with Wolfir Silverheart and Day of Judgment for if things get to heavy and last if your not looking at budget you can add in Thragtusk with Cloudshift and I would also grab card:Green Sun's Zenith to grab the creatures you need when you need them. these are all post rotation except for green sun's and day of judgment. will will all be sad when we lose green sun's zenith.
Wolfir Silverheart is awesome paired with anyone that has trample or has a Rancor on them. Revenge of the Hunted is one of the best cards green has atm because it can act as a board sweeper or an alpha to deliver lethal. Prey Upon is a nice removal spell for green and is almost kinda like splashing black for Doom Blade or Go for the Throat as long as you have big creatures out...and from what I'm seeing you have some Big O'l Fatties. ;) Strangleroot Geist is always nice to try and fit into a deck running a lot of green. Might wanna drop the Prized Elephant s for Strangleroot Geist s?? That would let you cut white from the deck and make it more consistent....and when you have tons of forests you can't go wrong with Dungrove Elder either. I think those would be the only changes I'd make...you will really like pairing a Wolfir Silverheart with those Pathbreaker Wurm s if you get there...and Prey Upon , Rancor , and Revenge of the Hunted can get you there!
Also if you make the changes I suggested, you can cut 4 lands from your deck and get yourself closer to 60.
Thanks guys, changed it, what should i take out so i can put in birds and primeval titan and those guys though ?