Speaking from the uninformed perspective of someone who's never opened an Unfinity pack, the set looks like it would be fun the first time you tried it, and then never again (outside of an Attraction Commander deck, which admittedly sounds like a laugh)
Creepiness aside, he seems like a cool recursive attacker who will continue to harass your opponents using the Armour of Shrieking Souls as long as you can make sure that their creatures keep leaving the battlefield
And not really even because of power, but because of ubiquity
So buckle up and join me on a crash course in Aetherdrifts rules of the road
Its beauty and relative rarity are the only real reasons to cherish it, though
The card has all the same abilities as its original version, so you could still play this in your top-tier Amethyst deck