When Growth Barrens enters the battlefield, sacrifice it unless you pay .
: Add to your mana pool. If you played a land this turn, Add to your mana pool instead.
, , Sacrifice Growth Barrens: Destroy target planeswalker.
.
: Add 
to your mana pool. If you played a land this turn, Add to your mana pool instead.
, , Sacrifice Growth Barrens: Destroy target planeswalker.
