Plains Lake enters the battlefield tapped unless you sacrifice a Blue permanent.
: Add to your mana pool. Activate this ability only if you control a Plains.
: Add to your mana pool. Activate this ability only if you control an Island.
Vigilance
: Add 
to your mana pool. Activate this ability only if you control a Plains.: Add 
to your mana pool. Activate this ability only if you control an Island.
