Many have asked for this to be banned in Commander since entire decks are built around breaking it in their decks with a storm count win like Tendrils of Agony after dropping all of those zero cost artifacts or Dark Ritual effects
The hybrid four-drop isnt a good finisher unless you have a way to target it
Notably, attempts to make "fixed" versions of the Power Nine, such as Treasure Cruise in the Khans of Tarkir set, can still become overpowered, and thus Treasure Cruise is banned in Legacy and restricted in Vintage, just like the Ancestral Recall it sought to emulate.
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It's due to their pristine condition
As an example, Plaguecrafter would cause all players to sacrifice a creature or planeswalker, not each team