(Saltcrusted Aqueduct isn't a spell.)

Saltcrusted Aqueduct enters the battlefield tapped unless you control one or more creatures.

Saltcrusted Aqueduct is indestructible. (Destroy effects and lethal damage don't destroy it.)

, Pay 1 life: Add  or to your mana pool.

, , Sacrifice Saltcrusted Aqueduct: Draw a card.