Arya, Comatose Elf

Arya, Comatose Elf can't attack or block.
At the beginning of each upkeep, you may pay {p/g}{p/g}{p/g} or sacrifice Arya, Comatose Elf.
At the beginning of your upkeep, if you control a
land called Farthen Dur, Home of the Varden, flip Arya, Comatose Elf