(: Add or to your mana pool.)
Caves Oasis enters the battlefield tapped.
: Caves Oasis becomes a 2/1 black and green Rogue creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.): Caves Oasis becomes a 2/1 black and green Rogue creature until end of turn. It's still a land.
