When Molten Flats 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.
: Return Molten Flats to its owner's hand.
.
: Add to your mana pool. If you played a land this turn, Add 
to your mana pool instead.: Return Molten Flats to its owner's hand.
