Whenever you cast your first instant or sorcery spell each turn, exile an instant or sorcery card at random from your graveyard. Then copy each card exiled with this enchantment. You may cast any number of the copies without paying their mana costs.
Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the beginning of the next turn's upkeep.
Knowledge itself is neither good nor evil. Just as the wrong book in the wrong hands could doom all existence, the same book in the right hands could save it.
You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. If that spell would be put into their graveyard, exile it instead. Cipher
Look at the top four cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. Flashback {3}{U}{R}
Search the Room — {5}{U}: Roll a d20. 1—9 | Draw a card. 10—20 | Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.
Prototype {1}{U}{U} — 2/1 When this creature enters, if you cast it, exile target instant or sorcery card with mana value less than or equal to this creature's power from your graveyard. Copy that card. You may cast the copy without paying its mana cost.
Flying When this creature enters, look at the top four cards of your library. You may reveal an artifact or enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.