Summary For those who want a quick run down of the post
It is possible, though unlikely, that the rules around vanishing will change to prevent this

Strixhaven Aether Helix | Illustration by Torstein Nordstrand Modern Horizons 2 Prophetic Titan | Illustration by Slawomir Maniak Dungeons & Dragons: Adventures In The Forgotten Realms Skeletal Swarming | Illustration by Svetlin Velinov Innistrad: Midnight Hunt Siphon Insight | Illustration by Livia Prima Innistrad: Crimson Vow Hullbeaker Horror | Illustration by Svetlin Velinov Kamigawa: Neon Dynasty Moonsnare Specialist Illustration by Lie Setiawan Streets of New Capenna Void Rend Illustration by Rovina Cai Dominaria United Shivan Devastator | Illustration by Brent Hollowell The Brothers' War Myrel, Shield of Argive | Illustration by Ryan Pancoast Phyrexia: All Will Be One Migloz, Maze Crusher | Illustration by Zezhou Chen March of the Machines Breach the Multiverse | Illustration by Liiga Smilshkalne The Lord of the Rings: Tales of Middle-Earth Samwise Gamgee | Illustration by Marko Maney Commander Masters Obscuring Haze | Illustration by Campbell White Wilds of Eldraine Hylda's Crown of Winter | Illustration by Volkan Baga The Lost Caverns of Ixalan Magmatic Galleon | Illustration by Cristi Balanescu Murders at Karlov Manor Analyze the Pollen | Illustration by Anna Christenson How Many Cards Are on The List

But the last ability has the potential to hit for a big amount, especially when you target a flier
Its a powerful stax piece that forces your opponents to pay more mana or drown in card advantage as you draw more and more spells
This caused the setup to be lengthy and difficult, leaving players to opt for strong EX cards, skipping the Mega evolution entirely