When Sunken Weald enters the battlefield, return a land you control to its owner's hand.
: Add or to your mana pool.
Sacrifice Sunken Weald: Add or to your mana pool.
: Return Sunken Weald to its owner's hand.
: Add 
or 
to your mana pool. or to your mana pool.: Return Sunken Weald to its owner's hand.
