River Needle enters the battlefield tapped.
, Pay 1 life: Add or to your mana pool.
, , Sacrifice River Needle: Draw a card.
: River Needle becomes a 1/1 blue and red Fish creature with flying until end of turn. It's still a land.
, Pay 1 life: Add 
or 
to your mana pool.
, , Sacrifice River Needle: Draw a card.: River Needle becomes a 1/1 blue and red Fish creature with flying until end of turn. It's still a land.
