Fetch lands
From MTG Salvation Wiki
Fetch lands are a cycle of ten rare lands from Onslaught and Zendikar that can be sacrificed along with the payment of one life, to search the controller's library for a single land that has one of two basic land types specified on the card. In Onslaught, the land types are the land types of neighboring colors on the color wheel; they are: Flooded Strand (Plains and Island), Polluted Delta (Island and Swamp), Bloodstained Mire (Swamp and Mountain), Wooded Foothills (Mountain and Forest), and Windswept Heath (Forest and Plains). In Zendikar, the land types are the land types of opposite colors on the color wheel they are: Marsh Flats (Plains and Swamp), Scalding Tarn (Island and Mountain), Verdant Catacombs (Swamp and Forest), Arid Mesa (Mountain and Plains), and Misty Rainforest (Forest and Island).
Fetch lands are associated with the theory of deck thinning, and are an improved version of a similar cycle from Mirage that consists of: Flood Plain (Plains and Island), Bad River (Island and Swamp), Rocky Tar Pit (Swamp and Mountain), Mountain Valley (Mountain and Forest), and Grasslands (Forest and Plains).
Shards of Alara brought a cycle of common lands entitled Panoramas, one for each Shard. These have an additional ability to tap for 
and for , 
and sacrifice they search for one basic land of the three according basic land types and put it onto the battlefield tapped. They are Bant Panorama (Forest, Plains and Island), Esper Panorama (Plains, Island and Swamp), Grixis Panorama (Island, Swamp and Mountain), Jund Panorama (Swamp, Mountain and Forest), and Naya Panorama (Mountain, Forest and Plains).
Additionally, there have been some odd lands that may be considered Fetch lands as well. Terminal Moraine from Planeshift can tap for or for 
, and sacrifice it can search for any basic land and bring it into play tapped. Krosan Verge from the green and white centered Judgment set comes into play tapped, taps for or for , and sacrifice of it can search for a Forest and Plains card and put them into play tapped. Time Spiral as well as subsequent Core Sets 10th Edition and Magic 2010 printed Terramorphic Expanse which does not require life to be paid but can only search for a basic land (of any type) which it will bring into play tapped. Finally, the legendary Flagstones of Trokair, also of Time Spiral may also be considered a fetchland even though it can not sacrifice itself. However, when it is put into the graveyard from play it searches for a Plains card and puts it into play tapped.
