(: Add or to your mana pool.)
Graven Cairns enters the battlefield tapped unless you pay .
, : Target land becomes a 2/2 red Elemental creature until end of turn. It's still a land.
, , Sacrifice Graven Cairns: Target player discards a card.
: Add 
or 
to your mana pool.).
, : Target land becomes a 2/2 red Elemental creature until end of turn. It's still a land., , Sacrifice Graven Cairns: Target player discards a card.
