(: Add or to your mana pool.)
Calciform Cairns enters the battlefield tapped.
, , Sacrifice Calciform Cairns: Prevent all combat damage that would be dealt this turn.
, , Sacrifice Calciform Cairns: Target player discards a card.
: Add 
or 
to your mana pool.), , Sacrifice Calciform Cairns: Prevent all combat damage that would be dealt this turn.
, , Sacrifice Calciform Cairns: Target player discards a card.
