Krosan Grave enters the battlefield tapped unless you reveal a Bear Treefolk card from your hand.
: Add or to your mana pool.
Put Krosan Grave on top of your library: Add to your mana pool.
, Sacrifice Krosan Grave: Add to your mana pool.
: Add 
or 
to your mana pool.
to your mana pool. , Sacrifice Krosan Grave: Add 
to your mana pool.
