(Nomad Ruins isn't a spell.)
Nomad Ruins enters the battlefield tapped unless you reveal a multicolored card from your hand.
Sacrifice a land: You gain 1 life.
: Add to your mana pool. If you played a land this turn, Add to your mana pool instead.
: Add 
to your mana pool. If you played a land this turn, Add 
to your mana pool instead.
