(: Add or to your mana pool.)
Farm Key enters the battlefield tapped unless you control one or more Citizens.
: Farm Key becomes a 0/4 white and blue Bird creature with defender until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
: Farm Key becomes a 0/4 white and blue Bird creature with defender until end of turn. It's still a land.
