At the beginning of your end step, if you didn't cast any spells this turn, Obsidian Heath deals 1 damage to you.
: Add to your mana pool.
: Add or to your mana pool. Each opponent gains 1 life.
, Sacrifice Obsidian Heath: Add to your mana pool.
: Add 
to your mana pool.: Add 
or 
to your mana pool. Each opponent gains 1 life., Sacrifice Obsidian Heath: Add 
to your mana pool.
