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