As popular Magic: The Gathering content creator, The Command Zone, pointed out in its latest Commander precon deck upgrade video, this effect is a great fit for the new deck Eternal Might, led by the MTG commander Temmet, Naktamun's Will
(Oh yeah, Unpredictable Cyclone doesn't care about normal timing restrictions, so you can use it to cast sorceries and creatures during your opponent's turn by cycling a card.) Eventually, this will give you an overwhelming amount of value thanks to all of the things you're playing for free with Unpredictable Cyclone and theoretically win you the game
What is the purpose of it is inclusion
in a typical 4 Player FFA game that's up to 3 cards drawn each turn cycle
Dark Confidant, Hypnotic Specter, Grief, and Cauldron Familiar all have historical relevance across different Constructed formats, but dont have a meaningful impact in Commander