MEGA Dream ex guarantees an MA (Mega Attack Rare) instead, which is unique to that set but typically valued lower than SARs
I have used them myself, so please think of them as for play, Please consider them for playing

Grub, Storied Matriarch Gumdrop Poisoner Gyome, Master Chef Hama, the Bloodbender Hazel's Brewmaster Headliner Scarlett Hearthborn Battler Heirloom Auntie Herald of Hadar High Fae Negotiator Hired Hexblade Honest Rutstein Hopeful Initiate Host of the Hereafter Hylda of the Icy Crown Imperious Inkmage Infestation Sage Kaervek, the Punisher Kaervek, the Spiteful Katilda, Dawnhart Martyr Katilda, Dawnhart Prime Kels, Fight Fixer Killian, Decisive Mentor Killian, Ink Duelist Kitsune, Dragon's Daughter Lecturing Scornmage Leech Collector Leech Fanatic Liliana's Devotee Lynde, Cheerful Tormentor Malevolent Witchkite Marina Vendrell Marshland Bloodcaster Matoya, Archon Elder Merchant of Venom Mind Drill Assailant Misfortune Teller Molten Lavamancer Moonglove Extractor Moonstone Eulogist Moseo, Vein's New Dean Mudbutton Cursetosser Nazar, the Velvet Fang Nezumi Linkbreaker Nico Minoru, Runaway Novice Dissector Obeka, Splitter of Seconds Odious Witch Oriq Loremage Osteomancer Adept Outlaw Stitcher Owlin Shieldmage Passageway Seer Piper of the Swarm Poisoner's Apprentice Postmortem Professor Priest of Fell Rites Promising Duskmage Prosper, Tome-Bound Rattleback Apothecary Rinoa Heartilly Rinoa, Angel Wing Rivaz of the Claw Sanguine Syphoner Saryth, the Viper's Fang Scalestorm Summoner Scarlet Witch, Chaotic Avenger Scarlet Witch, Wanda Maximoff Scathing Shadelock Scheming Silvertongue Sedgemoor Witch Seer of Stolen Sight

Sulfuric Vortex seems like a staple in EDH burn decks, which are now better than ever thanks to options like Solphim, Mayhem Dominus and Ojer Axonil, Deepest Might / Temple of Power
Successful TCG players often invest time and effort in understanding card synergies, predicting the metagame, and refining their decks for competitive play
So, if you have 60 black cards, you should have 60 red cards, 60 white cards, and so on