(Palace Garden isn't a spell.)
When Palace Garden enters the battlefield, you lose 1 life unless you reveal a nonbasic land card from your hand.
, : Scry 2.
: Add or to your mana pool.
Sacrifice Palace Garden: Add or to your mana pool.
, 
: Scry 2.: Add 
or 
to your mana pool. or to your mana pool.
