You can craft duplicates of cards you already own if you require them for deck-building, and can also craft cards you do not possess in an attempt to slowly complete your collection

Aberrant Mind Sorcerer Abhorrent Oculus Acolyte of Affliction Adwal, Breaker of Chains Airlift Chaplain Animal Magnetism Arid Archway Ashiok, Sculptor of Fears Astrid Peth Avenging Druid Barrier of Bones Bashful Beastie Biblioplex Assistant Bison Whistle Blanchwood Prowler Bloodwater Entity Bookwurm Boseiju Reaches Skyward Brazen Buccaneers Break Down the Door Breaking // Entering Calix, Destiny's Hand Call of the Wild Cauldron's Gift Cavalier of Thorns Cemetery Tampering Cenote Scout Champion of Stray Souls Charforger Chrome Courier Circle of the Land Druid Clandestine Meddler Clone Shell Commercial District Conductive Machete Conduit Pylons Corpse Appraiser Curator Beastie Curse of Unbinding Cursed Windbreaker Dakmor Salvage Deadbridge Chant Deeproot Wayfinder Defiant Survivor Defossilize Dire Fleet Interloper Disturbing Mirth Dogged Detective Draugr Thought-Thief Dread Summons Dreadhound Dukhara Scavenger Earth's Mightiest Heroes Eccentric Farmer Eerie Soultender Elegant Parlor Emissary of Sunrise Emry, Lurker of the Loch Enduring Renewal Enigma Sphinx Extract from Darkness Extractor Demon Faerie Dreamthief Fallaji Archaeologist Fated Return Fleeting Memories Foul Watcher Gallifrey Council Chamber Gamekeeper Garland, Knight of Cornelia Gate Colossus

Then there are single instance ramp spells such as Jeweled Lotus, Irencrag Feat, Dark Ritual, Mana Drain, Culling Ritual, etc
But, to bury the lede, the card you want in this set is Sheoldred, the Apocalypse
Best of all, they won't take any money until dispatch, so you can secure your Play Booster Box now to avoid disappointment at launch
Finally, theres the 2019 Ancient Mew reprint, which was designed to closely resemble the original Ancient Mew I