Journey to the Lost Lands

Tap any number of ally creatures. For each creature tapped this way, search your deck for a Basic Green Land and summon it onto your battlefield, tapped.
A journey taken wisely changes a man. A journey taken without precaution destroys a man. A journey to discover will end learning naught. A journey to escape will put you into the fray. But a journey to all of the above will change the world.