At the beginning of your end step, if you didn't cast any spells this turn, Farm Barrens deals 1 damage to you.

, Pay 1 life: Add  or to your mana pool.

, , Sacrifice Farm Barrens: Draw a card.

: Farm Barrens becomes a 0/4 white and black Spirit Cleric creature with defender until end of turn. It's still a land.