When Overgrown Lake enters the battlefield, sacrifice it unless you pay .
: Add to your mana pool.
: Add or to your mana pool. Each opponent gains 1 life.
: Return Overgrown Lake to its owner's hand.
.
: Add 
to your mana pool.: Add 
or to your mana pool. Each opponent gains 1 life.: Return Overgrown Lake to its owner's hand.
