If Lake of the Dead would enter, sacrifice a Swamp instead. If you do, put Lake of the Dead onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add {B}. {T}, Sacrifice a Swamp: Add {B}{B}{B}{B}.
2004-10-04
The tap and sacrifice counts as tapping the land for mana.
2004-10-04
You have to sacrifice a swamp before this card is put onto the battlefield. And you have to do this no matter how it is put onto the battlefield.