(: Add or to your mana pool.)
Graven Cairns enters the battlefield tapped unless you control one or more creatures.
, : Target red creature gets +1/+0 until end of turn.
, , Sacrifice Graven Cairns: Target player discards a card.
: Add 
or 
to your mana pool.), : Target red creature gets +1/+0 until end of turn.
, , Sacrifice Graven Cairns: Target player discards a card.
