When Salty Heath enters the battlefield, sacrifice it unless you pay .
: Add to your mana pool. Return Salty Heath to its owner's hand.
: Salty Heath becomes a 2/2 white Knight creature until end of turn. It's still a land.
.
: Add 
to your mana pool. Return Salty Heath to its owner's hand.
: Salty Heath becomes a 2/2 white Knight creature until end of turn. It's still a land.
