Krosan Flagstones enters the battlefield tapped.
, : Add , or to your mana pool. Krosan Flagstones deals 1 damage to you.
, Sacrifice Krosan Flagstones: Add to your mana pool.
, 
: Add 
, 
or to your mana pool. Krosan Flagstones deals 1 damage to you., Sacrifice Krosan Flagstones: Add 
to your mana pool.
