Four mana for a Human lord providing multiple abilities and a buff is an incredible value
Besides, there are lots of great times to stick someone, like in response to their Traverse the Ulvenwald or Evolving Wilds
You can cycle big creatures to have quality fodder, or you can have The Mimeoplasm be a copy of */* creatures that get bigger with more cards in graveyards
Crash of Rhino Beetles is cute, but its not really what a lands or ramp deck wants to do
If you want the lowest entry price, start with Lorwyn Eclipsed
The turn after a Wheel usually means a dozen or more points of damage for an unlucky opponent via Lightning Bolt, Goblin Grenade, Ball Lightning, Fireblast, Chain Lightning, and other cheap burn effects