(: Add or to your mana pool.)
Vault Farm enters the battlefield tapped unless you sacrifice a monocolored permanent.
: Vault Farm becomes a 2/1 black and green Rogue creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.): Vault Farm becomes a 2/1 black and green Rogue creature until end of turn. It's still a land.
