Tropical Catacomb enters the battlefield tapped.
: Add or to your mana pool.
Sacrifice Tropical Catacomb: Add or to your mana pool.
: Tropical Catacomb becomes a 2/1 green and black Elf creature until end of turn. It's still a land.
: Add 
or 
to your mana pool. or to your mana pool.: Tropical Catacomb becomes a 2/1 green and black Elf creature until end of turn. It's still a land.
