Whenever Krosan Caldera becomes tapped, it deals 1 damage to you.
: Add to your mana pool. If you played a land this turn, Add to your mana pool instead.
: Krosan Caldera becomes a 2/2 green Stag creature until end of turn. It's still a land.
: Add 
to your mana pool. If you played a land this turn, Add 
to your mana pool instead.
: Krosan Caldera becomes a 2/2 green Stag creature until end of turn. It's still a land.
