Rootbound Crag is a cheap yet useful card to invest in.

Spartan028 which card?

Rootbound crag, a land that comes into play tapped unless you control a mountain or a forest. You can tap it for green/red.

I would put Ruric Thar, the Unbowed . It's a big creature that will stop others casting instants and sorcery cards against you.

Spartan028, that card, along with that entire cycle of land, rotated out when Theros dropped

And kuryan100, while Ruric Thar, the Unbowed is an awesome card and an incredible answer for control, it would be more of something for the sideboard with this current build.

Also, (sorry for the triple post) why do you have a Seismic Stomp in the side when the Gruul Charm has the same effect already covered?

I also might put in a planeswalker like Xenagos, The Reveler or Domri Rade . Domri is good to get creatures out from your deck without drawing cards, and Xenagos gets you extra land to play.

Yea, those planeswalkers have caused me some problems... I would consider them to defeat control players

every creature need not be a beast for it to work... consider the hydras, they wreck control as well

Definitely consider Polukranos, World Eater .