(Flat Mountain isn't a spell.)
Flat Mountain enters the battlefield tapped unless you pay 1 life.
, : Scry 2.
, Pay 1 life: Add or to your mana pool.
, , Sacrifice Flat Mountain: Draw a card.
, 
: Scry 2., Pay 1 life: Add 
or 
to your mana pool., , Sacrifice Flat Mountain: Draw a card.
