(: Add or to your mana pool.)
When Arid Furnace enters the battlefield, sacrifice it unless you pay .
: Arid Furnace becomes a 0/4 red and white Bird creature with defender until end of turn. It's still a land.
: Add 
or 
to your mana pool.).
: Arid Furnace becomes a 0/4 red and white Bird creature with defender until end of turn. It's still a land.
