Belleavance The RoomSmith

When Belleavance The Great RoomSmith enter
the battlefield chose up to one land you control.
When you{t}this land for mana,
produce twice that amount.
•TRUC DE PRO—{6}{w}{w}{t}
Target one permanent land an
opponent control,exile it.
Then chose a new color and put
that land on the battlefield tapped
Under your control.