Reef Crater enters the battlefield tapped.
, Pay 1 life: Add or to your mana pool.
, , Sacrifice Reef Crater: Draw a card.
: Reef Crater becomes a 2/1 blue and red Crab Shapeshifter creature until end of turn. It's still a land.
, Pay 1 life: Add 
or 
to your mana pool.
, , Sacrifice Reef Crater: Draw a card.: Reef Crater becomes a 2/1 blue and red Crab Shapeshifter creature until end of turn. It's still a land.
