When Shelldock Megaliths enters the battlefield, you lose 2 life unless you reveal an artifact card from your hand.

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

, , Sacrifice Shelldock Megaliths: Draw a card.

: Shelldock Megaliths becomes a 1/1 blue and red Crab Faerie creature with flying until end of turn. It's still a land.