The Margrave

When The Margrave enters the battlefield, search
your library for a card named Charnok, Brigadier
General and put it in your hand. It costs {3} less.
if Charnok is your commander, you may put him
from the command zone into the battlefield.
As long as you control both The Margrave and
Charnok, Brigadier General, Charnok's ability is
repeated at the beginning of your upkeep.
All lands are islands in addition to their other
types.