When Krosan Wastes enters the battlefield, you lose 2 life unless you reveal a Merfolk card from your hand.

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

, , Sacrifice Krosan Wastes: Draw a card.

: Krosan Wastes becomes a 2/2 green and blue Treefolk creature with trample until end of turn. It's still a land.