Tranquil Key enters the battlefield tapped.
, Pay 1 life: Add or to your mana pool.
, , Sacrifice Tranquil Key: Draw a card.
: Tranquil Key becomes a 0/4 white and blue Angel creature with defender until end of turn. It's still a land.
, Pay 1 life: Add 
or 
to your mana pool.
, , Sacrifice Tranquil Key: Draw a card.: Tranquil Key becomes a 0/4 white and blue Angel creature with defender until end of turn. It's still a land.
