(: Add or to your mana pool.)
When Obsidian-wood enters the battlefield, sacrifice it unless you pay 3 life.
: Obsidian-wood becomes a 2/2 black Rogue Zombie creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
: Obsidian-wood becomes a 2/2 black Rogue Zombie creature until end of turn. It's still a land.
