(: Add or to your mana pool.)
River Castle enters the battlefield tapped.
, , Sacrifice River Castle: Return target creature you control to its owner's hand.
, : Put a 1/1 Bird creature token onto the battlefield.
: Add 
or 
to your mana pool.), , Sacrifice River Castle: Return target creature you control to its owner's hand.
, : Put a 1/1 Bird creature token onto the battlefield.
