Cave Ruins enters the battlefield tapped unless you pay .
: Add to your mana pool. If you played a land this turn, Add to your mana pool instead.
, : Add one mana of any color to your mana pool.
.
: Add 
to your mana pool. If you played a land this turn, Add 
to your mana pool instead.
, : Add one mana of any color to your mana pool.
