Like any rule of thumb, there are exceptions to this, but the key is to remember that it is okay to play your cards in the base form and that curving is highly important
Following up on the lands theme Ob Nixilis, the Fallen, and Hedron Crab also float around this price point
Other cards can automatically attach equipment to target creatures , which gets around paying for the equip cost, [c]Armored Skyhunter[/c] and [c]Ardenn, Intrepid Archaeologist[/c] are all examples of these cards
If it had a third colour like black it would be ideal
Green based control decks have been getting better and better recently in the cube and Wall of Roots is a mainstay of these decks
One of those is simply Voltron something thats rather easily accomplished by pairing Ormacar with Excalibur, Sword of Eden