Caves Fountain enters the battlefield tapped.
: Add or to your mana pool.
Put Caves Fountain on top of your library: Add to your mana pool.
: Caves Fountain becomes a 2/2 black Rogue creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.
to your mana pool. : Caves Fountain becomes a 2/2 black Rogue creature until end of turn. It's still a land.
