(: Add or to your mana pool.)
Obsidian Farm enters the battlefield tapped.
: Obsidian Farm becomes a 2/1 black and white Cleric creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.): Obsidian Farm becomes a 2/1 black and white Cleric creature until end of turn. It's still a land.
