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Thawing Glaciers enters the battlefield tapped.
{1}, {T}: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Return Thawing Glaciers to its owner's hand at the beginning of the next cleanup step.
Because the “search” requires you to find a card with certain characteristics, you don’t have to find the card if you don’t want to.
The land put onto the battlefield does not count toward your one per turn limit because it was put onto the battlefield by an effect.
