(: Add or to your mana pool.)
Calciform Ring enters the battlefield tapped.
, , Sacrifice Calciform Ring: Prevent all combat damage that would be dealt this turn.
, : Target red creature gets +1/+1 until end of turn.
: Add 
or 
to your mana pool.), , Sacrifice Calciform Ring: Prevent all combat damage that would be dealt this turn., : Target red creature gets +1/+1 until end of turn.
