(: Add or to your mana pool.)
Sparkling Hollow enters the battlefield tapped unless you pay .
: Sparkling Hollow becomes a 2/1 blue and black Shapeshifter creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.).: Sparkling Hollow becomes a 2/1 blue and black Shapeshifter creature until end of turn. It's still a land.
