While Virtue of Knowledge isnt the speediest spell with a mana value of 5, the Instant half it gains through being an adventure is much cheaper and still frequently useful
Thanks MTGO
The Phyrexia: All Will Be One Bundle includes that and so much more, containing eight Phyrexia: All Will Be One Set Boostersthe best boosters to open just for funplus a traditional foil alternate-art Karumonix, the Rat King promo card, 40 basic lands (20 traditional foil basic lands and 20 non-foil basic lands), an oversized spindown life counter, a card storage box, and two reference cards
Meanwhile, Niv-Mizzet Parun is effortlessly drawing you a ton of cards just for running whatever instants or sorceries you feel like
If this was for first-week Standard, then there would be a very good argument to put Felidar Guardian up at the top of the list, but there is a very real chance that the card wont be legal throughout its time in Standard
You can also hide it on top of your library in response to artifact destruction