I am looking at adding Earthcraft to one of my EDH decks. This deck does not contain any basic lands so my question is do have to have a valid target for Earthcraft? Or can i just user to tap my Gilder Bairn? Would the target have to be someone else land? Or could i pick an invalid target and just not have the land picked untap (something like Steam Vents)?
You'll need a valid target to activate the ability. You could target someone else's land if you want, and the land you target does not have to be tapped.
If this idea does not work any suggestions?