When Havenwood Aqueduct enters the battlefield, sacrifice it unless you pay .
, : Add to your mana pool.
: Havenwood Aqueduct becomes a 1/1 green and blue Beast creature with flying until end of turn. It's still a land.
., 
: Add 
to your mana pool., : Add to your mana pool.
: Havenwood Aqueduct becomes a 1/1 green and blue Beast creature with flying until end of turn. It's still a land.
