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11/30/2012 - Pasteur's latest submission for Frontier includes Dig as a smoothing mechanic half-way between cycling and landcycling. You don't get to search your library or choose which card you get, but you are guaranteed a land card. He wasn't the first to propose Dig for this challenge and this challenge wasn't the first time Dig has been proposed, but it's an appealing mechanic because it fixes mana well while remaining fairly quick to execute and of low enough power level to go on a lot of cards without ruining their appeal.
Dig 2 (2, Discard this card: Reveal cards from the top of your library until you reveal a land card. Put that card into your hand and the rest on the bottom of your library in a random order.)