Land
If this land would enter, sacrifice a Swamp instead. If you do, put this land 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}.
Autentícate usando cualquiera de los siguientes métodos. Si es tu primera vez, te pedirá que te des de alta.
