When Sacred Barrens enters the battlefield, you lose 2 life unless you reveal an artifact land card from your hand.

: Add  to your mana pool. Activate this ability only if you control a Plains.

: Add  to your mana pool. Activate this ability only if you control a Swamp.

: Sacred Barrens becomes a 2/1 white and black Bird Spirit creature until end of turn. It's still a land.