The Living Planet

The Living Planet has all land types that lands on the battlefield have.
When the Living Planet enters, sacrifice it and two other lands unless you pay {w}{u}{b}{r}{g} and {2} for each time it has entered the battlefield after the first.
Lands you control have Indestructible, are 1/1 Elemental creatures in addition to their other types, and get +1/+1 for each land type they possess.
The Living Planet can be your commander.