It might have redefined Pauper, but mechanics that encourage people to do things and get aggressive, especially in Commander, are always winners in my book
Morphling was that good of a card
If you have reason to change only specific Creatures, however, this could be a powerful effect
You may look at this card and think Wow, is this one somehow about death too? Thats fair enough
Flash doesnt go the graveyard after it resolves

Release date: 2018-07-25 Boreas Charger Empyrial Storm Heavenly Blademaster Loyal Unicorn Magus of the Balance Aminatou's Augury Echo Storm Estrid's Invocation Ever-Watching Threshold Loyal Drake Octopus Umbra Primordial Mist Vedalken Humiliator Bloodtracker Entreat the Dead Loyal Subordinate Night Incarnate Skull Storm Sower of Discord Emissary of Grudges Enchanter's Bane Fury Storm Loyal Apprentice Nesting Dragon Reality Scramble Saheeli's Directive Treasure Nabber Varchild, Betrayer of Kjeldor Crash of Rhino Beetles Genesis Storm Loyal Guardian Myth Unbound Nylea's Colossus Ravenous Slime Turntimber Sower Whiptongue Hydra Aminatou, the Fateshifter Arixmethes, Slumbering Isle Brudiclad, Telchor Engineer Estrid, the Masked Gyrus, Waker of Corpses Kestia, the Cultivator Lord Windgrace Saheeli, the Gifted Tawnos, Urza's Apprentice Thantis, the Warweaver Tuvasa the Sunlit Varina, Lich Queen Windgrace's Judgment Xantcha, Sleeper Agent Yennett, Cryptic Sovereign Yuriko, the Tiger's Shadow Ancient Stone Idol Coveted Jewel Endless Atlas Geode Golem Retrofitter Foundry Forge of Heroes Isolated Watchtower Adarkar Valkyrie Ajani's Chosen Akroma's Vengeance Banishing Stroke Celestial Archon Crib Swap Dismantling Blow Entreat the Angels Lightform Martial Coup Phyrexian Rebirth Return to Dust Sage's Reverie
