(Cascade Catacombs isn't a spell.)
When Cascade Catacombs enters the battlefield, you lose 2 life unless you reveal a Skeleton card from your hand.
, : Scry 2.
: Add or to your mana pool.
Sacrifice Cascade Catacombs: Add or to your mana pool.
, 
: Scry 2.: Add 
or 
to your mana pool. or to your mana pool.
