Tropical Aqueduct enters the battlefield tapped unless you pay 3 life.
: Add or to your mana pool.
Sacrifice Tropical Aqueduct: Add or to your mana pool.
: Tropical Aqueduct becomes a 2/2 blue Fish creature until end of turn. It's still a land.
: Add 
or 
to your mana pool. or to your mana pool.
: Tropical Aqueduct becomes a 2/2 blue Fish creature until end of turn. It's still a land.
