The official word from Wizards of the Coast is that these Magic: The Gathering cards won't be reprinted because they don't meet modern standards, but there are a variety of reasons why these cards will not be returning

Advanced Search Sets Random Syntax Agency Outfitter Alhammarret, High Arbiter Arbiter of the Ideal Argent Sphinx Arjun, the Shifting Flame Atemsis, All-Seeing Azor, the Lawbringer Belltower Sphinx Cerulean Sphinx Chancellor of the Spires Citywatch Sphinx Cloudreader Sphinx Consecrated Sphinx Conspiracy Unraveler Conundrum Sphinx Curator of Destinies Curator of Mysteries Dazzling Sphinx Defiler of Dreams Dream Eater Dream Trawler Elenda and Azor Eligeth, Crossroads Augur Enigma Sphinx Enigma Thief Ethersworn Sphinx Glyph Keeper Goliath Sphinx Guardian of Tazeem Horizon Scholar Inspired Sphinx Isperia the Inscrutable Isperia, Supreme Judge Jelenn Sphinx Jwar Isle Avenger Magister Sphinx Marauding Sphinx Master of Predicaments Master of Winds Medomai the Ageless Ominous Sphinx Ormos, Archive Keeper Petra Sphinx Prognostic Sphinx Quantum Riddler Raffine, Scheming Seer Rescuer Sphinx Riddlemaster Sphinx Sandstone Oracle Scholar of the Lost Trove Serra Sphinx Serum Sovereign Sharding Sphinx Sharuum the Hegemon Sphinx Ambassador Sphinx Mindbreaker Sphinx Sovereign Sphinx Summoner Sphinx of Clear Skies Sphinx of Enlightenment Sphinx of Foresight Sphinx of Forgotten Lore Sphinx of Jwar Isle Sphinx of Lost Truths Sphinx of Magosi Sphinx of New Prahv Sphinx of Uthuun Sphinx of the Chimes Sphinx of the Final Word Sphinx of the Guildpact Sphinx of the Revelation Sphinx of the Second Sun

I have used this many times and it has worked better for me than when I was testing out MagneRock, even with my lack of Azelf
The main draw, however, is the special 12-card Chocobo Booster included in every bundle
For turn-by-turn odds on the play, add turns minus one: turn 1 is still 7 (no draw), turn 2 is 8, turn 3 is 9, and so on