When Obsidian Peak enters the battlefield, sacrifice it unless you pay .
: Add or to your mana pool.
Sacrifice Obsidian Peak: Add or to your mana pool.
, , Sacrifice Obsidian Peak: Target creature gets -2/-2 until end of turn.
.
: Add 
or to your mana pool. or to your mana pool., , Sacrifice Obsidian Peak: Target creature gets -2/-2 until end of turn.
