When Fetid Lake 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 Fetid Lake: Target creature gets -2/-2 until end of turn.
.
: Add 
to your mana pool. If you played a land this turn, Add to your mana pool instead., , Sacrifice Fetid Lake: Target creature gets -2/-2 until end of turn.
