(: Add or to your mana pool.)
Graven Shelter enters the battlefield tapped unless you pay .
: Graven Shelter becomes a 1/1 blue and red Troll creature with flying until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
.
: Graven Shelter becomes a 1/1 blue and red Troll creature with flying until end of turn. It's still a land.
