On it's own. this card isn't very good. Sure it's an 8/8 trampler for 6, but it has a huge drawback that doesn't really make it worth playing on it's own. The 4 green mana symbols make it extremely difficult to put into a dual colour like (like a red-green so you can run Fires of Yavimaya to give it haste). However, there is one combo that I would love to run if I had a couple copies if this card. Force of Nature + Stuffy Doll + Pariah's Shield + ramp. 8 damage a turn for free? Yes please! Other than that, this card's not worth the risk.
Pros: 8/8 trampler for 6, works well with a Pariah's Shield & Stuffy Doll
Cons: Doesn't work well outside of certain conditions, double-edged sword