Graven Canopy enters the battlefield tapped.
, Pay 1 life: Add or to your mana pool.
, , Sacrifice Graven Canopy: Draw a card.
, , You gain 1 life.
, Pay 1 life: Add 
or 
to your mana pool.
, , Sacrifice Graven Canopy: Draw a card., , You gain 1 life.
