Surveil 2, then choose an instant or sorcery card in your graveyard. You may cast it this turn. If that spell would be put into your graveyard, exile it instead. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
Mission Briefing has 4 listed printings; the most valuable is the Prerelease printing from PGRN at US$2.07 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
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