Hearthpwn

I think the aggro druid is probably the cheapest, strongest deck. it doesn't have any purples or oranges in it. 

Something like this...

2 Thorngrowth Sentries
2 Pride's Fury
2 Mark of the Wild
2 Peasant
2 Sow the Soil
2 Druid of the Reef
2 Jerry Rig Carpenter
2 Irondeep Trogg
2 Aquatic Form
2 Living Roots
2 Beaming Sidekick
2 Vicious Slitherspear
2 Herald of Nature
2 Planted Evidence
2 Crooked Cook