Winter's Grip

At the beginning of your end step, tap target
creature. Then, if there are 3 or more tapped creatures on the battlefield, sacrifice Winter's
Grip, then you may search your library or
graveyard for a card named Spring's Renewal,
reveal it, and put it onto the battlefield. If you
searched your library this way, shuffle it.
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When the chill blows in, all is still.