Channel The Elements

Indestructible, if you control at least
3 basic lands.
{1}: Add {r} to your mana pool.
{1} Add {u} to your mana pool.
{2}: Add {g} to your mana pool.
{4}: Gain {e}.
"The 4 basic elements are: earth, fire, air and water.
The 5th element is also wood. Some believe metal and
stone are 2 different elements."