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You also see a lot of fetch lands and the like in these builds

That didn't stop him from coming in second at Pro Tour Honolulu back in 2006 though

In the case of Old Text : When Druid of the Emerald Grove enters the battlefield, search your library for up to two basic land cards and reveal them, then roll a d20

People built Type 1 decks around this engine

The idea here is still to use a lot of the same support cards but rather than winning through direct drain and damage effects and the sacrifice triggers you win through denial of your opponents resources while yours persist or are simply more efficient when under constant erosion