(Mire-works isn't a spell.)
Mire-works enters the battlefield tapped.
Sacrifice a land: You gain 1 life.
: Add or to your mana pool.
: Add to your mana pool. Put Mire-works on top of your library.
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Mire-works on top of your library.
