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