skoogle

Scalding Tarn, if you can afford it. And maybe Steel Overseer (but maybe not). Otherwise, pretty good.

Bolt and Hauler don't rotate out of Standard until October, when Innistrad comes out. You can use them until then.

I'd go 14 mountains and 4 Contesteds.

Another idea is to use Vedalken Infuser, if you're willing to add a splash of blue. Otherwise, maybe Surge Node.

I would replace the Teetering Peaks and that other land with Contested War Zone. I would also include Goblin Chieftain and Goblin Wardriver.

I would avoid the Furnace Scamp personally, but the Bushwacker is a must. Keep the Wardrivers.

Would Contested War Zone be a better idea than Teetering Peaks?

It looks to me like you could use some trample. I suggest Rhox Charger. A 3/3 with Trample and Exalted for 3G.

Very nice deck, though.

I would suggest adding some trample. This can be done very easily with Rhox Charger. For 3G, you get a 3/3 with Trample and Exalted.

I would suggest adding some trample. This can be done very easily with Rhox Charger. For 3G, you get a 3/3 with Trample and Exalted.

Where's the Finest Hour?

Perhaps Cultivate could better suit the ramping element than Rampant Growth.