When Sulfurous Fountain enters the battlefield, you lose 2 life unless you reveal a Shapeshifter card from your hand.

When Sulfurous Fountain enters the battlefield, put a land you control on the bottom of its owner's library.

: Add  to your mana pool.

: Sulfurous Fountain becomes a 1/1 blue and black Zombie Horror creature with flying until end of turn. It's still a land.