(: Add or to your mana pool.)
Mosswort Furnace enters the battlefield tapped.
: Mosswort Furnace becomes a 2/2 red and green Elf creature with trample until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
: Mosswort Furnace becomes a 2/2 red and green Elf creature with trample until end of turn. It's still a land.
