(Gilt-Leaf Bog isn't a spell.)
When Gilt-Leaf Bog enters the battlefield, sacrifice it unless you pay .
, : Look at target player's hand.
: Add or to your mana pool.
: Add to your mana pool. Put Gilt-Leaf Bog on top of your library.
.
, 
: Look at target player's hand.: Add 
or to your mana pool.: Add 
to your mana pool. Put Gilt-Leaf Bog on top of your library.
