(: Add or to your mana pool.)
At the beginning of your upkeep, Obsidian Ravine deals 2 damage to target creature you control.
: Obsidian Ravine becomes a 1/1 black and red Rat creature with first strike until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
: Obsidian Ravine becomes a 1/1 black and red Rat creature with first strike until end of turn. It's still a land.
