The Bristlewood

The Bristlewood enters the battlefield tapped.
{t}: Add {g}{g} to your mana pool.
{3}{g}{g}, {t}: Search yout library for a creature
card with power 4 or greater, reveal it, and put
it into your hand and then shuffle your library.
"Other than the painful thorns and poisonous flora,
it's fine. Oh yeah, and the giant monsters; those too."
-Archmagi Pelonius Irthyll