Search target player's library for a card and exile it. Then that player shuffles.
To say Nixar had a splitting headache would be a bit of an understatement.
Illustrated by Matt Cavotta · Odyssey · #85
There are no rulings for Extract.
Search your library for a sorcery card, reveal it, then shuffle and put that card on top.
Search target player's library for up to three cards with flashback and put them into that player's graveyard. Then the player shuffles.
Search your library for any number of land cards, exile them, then shuffle.
Search your library for three cards, exile them, then shuffle.
Draw a card.
Search your library for a blue instant card, reveal that card, put it into your hand, then shuffle.
Suspend 3— (Rather than cast this card from your hand, pay and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)
Search target opponent's library for a creature card and put that card onto the battlefield under your control. Then that player shuffles.