(Flat Shoal isn't a spell.)
When Flat Shoal enters the battlefield, you lose 2 life unless you reveal a land card from your hand.
, : Scry 2.
: Add or to your mana pool.
: Add to your mana pool. Put Flat Shoal on top of your library.
, 
: Scry 2.: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Flat Shoal on top of your library.
