(: Add or to your mana pool.)
River Ring enters the battlefield tapped.
: River Ring becomes a 1/1 blue and red Shapeshifter creature with flying until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
: River Ring becomes a 1/1 blue and red Shapeshifter creature with flying until end of turn. It's still a land.
