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