Krosan River enters the battlefield tapped.
, : Add , or to your mana pool. Krosan River deals 1 damage to you.
: Krosan River becomes a 2/1 green and blue Bear creature until end of turn. It's still a land.
, 
: Add 
, 
or to your mana pool. Krosan River deals 1 damage to you.: Krosan River becomes a 2/1 green and blue Bear creature until end of turn. It's still a land.
