Sparkling Cavern enters the battlefield tapped.
: Add or to your mana pool.
Sacrifice Sparkling Cavern: Add or to your mana pool.
: Sparkling Cavern becomes a 2/1 blue and black Fish Merfolk creature until end of turn. It's still a land.
: Add 
or 
to your mana pool. or to your mana pool.: Sparkling Cavern becomes a 2/1 blue and black Fish Merfolk creature until end of turn. It's still a land.
